react.dev Open in urlscan Pro
76.76.21.21 Public Scan

Go To Rescan
Add Verdict Report

Submitted URL:
http://react.dev/learn/updating-arrays-in-state
Effective URL:
https://react.dev/learn/updating-arrays-in-state
Submission: On April 05 via manual (April 5th 2024, 6:19:23 pm UTC) from GB — Scanned from GB

Summary HTTP 53 Redirects Links 15 Behaviour Indicators

Summary

This website contacted 5 IPs in 2 countries across 4 domains to perform 53 HTTP transactions. The main IP is 76.76.21.21, located in Walnut, United States and belongs to AMAZON-02, US. The main domain is react.dev. The Cisco Umbrella rank of the primary domain is 211920.
TLS certificate: Issued by R3 on March 21st 2024. Valid for: 3 months.

This is the only time react.dev was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

	IP Address	AS Autonomous System
49	76.76.21.21 76.76.21.21	16509 (AMAZON-02) (AMAZON-02)
1	2a00:1450:400... 2a00:1450:4001:82a::2008	15169 (GOOGLE) (GOOGLE)
1	2001:4860:480... 2001:4860:4802:32::36	15169 (GOOGLE) (GOOGLE)
1	172.66.44.185 172.66.44.185	13335 (CLOUDFLAR...) (CLOUDFLARENET)
53	5

49 76.76.21.21 (Walnut, United States)

ASN16509 (AMAZON-02, US)

react.dev	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a00:1450:4001:82a::2008 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

www.googletagmanager.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2001:4860:4802:32::36 (United States)

ASN15169 (GOOGLE, US)

region1.google-analytics.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 172.66.44.185 (United States)

ASN13335 (CLOUDFLARENET, US)

786946de.sandpack-bundler-4bw.pages.dev	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

	Apex Domain Subdomains	Transfer
49	react.dev react.dev — Cisco Umbrella Rank: 211920	938 KB
1	pages.dev 786946de.sandpack-bundler-4bw.pages.dev — Cisco Umbrella Rank: 355464 Failed
1	google-analytics.com region1.google-analytics.com — Cisco Umbrella Rank: 2709	249 B
1	googletagmanager.com www.googletagmanager.com — Cisco Umbrella Rank: 43	87 KB
53	4

	Domain	Requested by
49	react.dev	react.dev
1	786946de.sandpack-bundler-4bw.pages.dev	react.dev
1	region1.google-analytics.com	www.googletagmanager.com
1	www.googletagmanager.com	react.dev
53	4

This site contains links to these domains. Also see Links.

Domain
conf.react.dev
github.com
developer.mozilla.org
www.surveymonkey.co.uk
opensource.fb.com
reactnative.dev
opensource.facebook.com
www.facebook.com
twitter.com

Subject Issuer	Validity	Valid
react.dev R3	`2024-03-21` - `2024-06-19`	3 months	crt.sh
*.google-analytics.com GTS CA 1C3	`2024-03-04` - `2024-05-27`	3 months	crt.sh
sandpack-bundler-4bw.pages.dev GTS CA 1P5	`2024-03-22` - `2024-06-20`	3 months	crt.sh

This page contains 2 frames:

Primary Page: https://react.dev/learn/updating-arrays-in-state
Frame ID: CD90FCF7801940B7270C221F2D6F3742
Requests: 51 HTTP requests in this frame

Frame: https://786946de.sandpack-bundler-4bw.pages.dev/
Frame ID: 4759923641E6C39E7DFE0F76AFD535C3
Requests: 2 HTTP requests in this frame

Screenshot
Live screenshot

Full Image

Page Title

Updating Arrays in State – React

Page URL History Show full URLs

http://react.dev/learn/updating-arrays-in-state HTTP 307
https://react.dev/learn/updating-arrays-in-state Page URL

Detected technologies

Google Analytics (Analytics) Expand

Overall confidence: 100%
Detected patterns

Google Tag Manager (Tag Managers) Expand

Overall confidence: 100%
Detected patterns

googletagmanager\.com/gtag/js

Page Statistics

53
Requests

98 %
HTTPS

50 %
IPv6

4
Domains

4
Subdomains

5
IPs

2
Countries

1025 kB
Transfer

2632 kB
Size

2
Cookies

15 Outgoing links

These are links going to different origins than the main page.

URL: https://conf.react.dev/
Title: Learn more.

Search URL Search Domain Scan URL

URL: https://github.com/facebook/react/releases

Search URL Search Domain Scan URL

URL: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice
Title: slice

Search URL Search Domain Scan URL

URL: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice
Title: splice

Search URL Search Domain Scan URL

URL: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax#spread_in_array_literals
Title: array spread

Search URL Search Domain Scan URL

URL: https://github.com/immerjs/use-immer
Title: Immer

Search URL Search Domain Scan URL

URL: https://www.surveymonkey.co.uk/r/PYRPF3X
Title: Take our survey!

Search URL Search Domain Scan URL

URL: https://opensource.fb.com/

Search URL Search Domain Scan URL

URL: https://github.com/facebook/react/blob/main/CODE_OF_CONDUCT.md
Title: Code of Conduct

Search URL Search Domain Scan URL

URL: https://reactnative.dev/
Title: React Native

Search URL Search Domain Scan URL

URL: https://opensource.facebook.com/legal/privacy
Title: Privacy

Search URL Search Domain Scan URL

URL: https://opensource.fb.com/legal/terms/
Title: Terms

Search URL Search Domain Scan URL

URL: https://www.facebook.com/react

Search URL Search Domain Scan URL

URL: https://twitter.com/reactjs

Search URL Search Domain Scan URL

URL: https://github.com/facebook/react

Search URL Search Domain Scan URL

Page URL History

This captures the URL locations of the websites, including HTTP redirects and client-side redirects via JavaScript or Meta fields.

http://react.dev/learn/updating-arrays-in-state HTTP 307
https://react.dev/learn/updating-arrays-in-state Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

53 HTTP transactions
0 data transactions

Method
Protocol Status Resource
Path Size
x-fer Time
Latency Type
MIME-Type IP
Location

GET
H2

200

Primary Request updating-arrays-in-state Show response
react.dev/learn/
Redirect Chain

http://react.dev/learn/updating-arrays-in-state
https://react.dev/learn/updating-arrays-in-state

381 KB
45 KB

227ms
56ms

Document
text/html

76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/learn/updating-arrays-in-state

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

8e87d4ae5f29d807fee201ee6b50b38b2a86d4d42f72a13851ba5399b04feaf8

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
accept-language: en-GB,en;q=0.9

Response headers

access-control-allow-origin: *
age: 235669
cache-control: public, max-age=0, must-revalidate
content-disposition: inline; filename="updating-arrays-in-state"
content-encoding: br
content-type: text/html; charset=utf-8
date: Fri, 05 Apr 2024 18:19:18 GMT
etag: W/"fd744374ecaf772c1e8713cf1cf5a4a4"
server: Vercel
strict-transport-security: max-age=63072000
x-matched-path: /learn/updating-arrays-in-state
x-vercel-cache: HIT
x-vercel-id: fra1::sjnk6-1712341158542-17b514ba8a1b

Redirect headers

Cross-Origin-Resource-Policy: Cross-Origin
Location: https://react.dev/learn/updating-arrays-in-state
Non-Authoritative-Reason: HSTS

GET
H2 200 cc74adab25fc8816.css
react.dev/_next/static/css/ 107 KB
20 KB 52ms
46ms Stylesheet
text/css 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/css/cc74adab25fc8816.css

Requested by

Host: react.dev
URL: https://react.dev/learn/updating-arrays-in-state

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

50961546bd250d0404aaa4b09c79723dd5ecdb306f1fecf6988535f4261f21c8

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::zjjlq-1712341158613-a47146ff5819
age: 201451
x-matched-path: /_next/static/css/cc74adab25fc8816.css
etag: W/"40573cc43563a7713ce57bc6b9b6e3ea"
x-vercel-cache: HIT
content-type: text/css; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="cc74adab25fc8816.css"

GET
H2 200 js Show response
www.googletagmanager.com/gtag/ 244 KB
87 KB 164ms
63ms Script
application/javascript 2a00:1450:4001:82a::2008
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://www.googletagmanager.com/gtag/js?id=G-B1E83PJ3RT

Requested by

Host: react.dev
URL: https://react.dev/learn/updating-arrays-in-state

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:82a::2008 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

Google Tag Manager /

Resource Hash

ccc79fa3fa17437a24c31dd5b9a31e8595d330b797ae976adcf484932883cd97

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000; includeSubDomains
X-Xss-Protection	0

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
content-encoding: br
strict-transport-security: max-age=31536000; includeSubDomains
server: Google Tag Manager
vary: Accept-Encoding
content-type: application/javascript; charset=UTF-8
access-control-allow-origin: *
cache-control: private, max-age=900
access-control-allow-credentials: true
cross-origin-resource-policy: cross-origin
access-control-allow-headers: Cache-Control
content-length: 88350
x-xss-protection: 0
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
expires: Fri, 05 Apr 2024 18:19:18 GMT

GET
H2 200 webpack-966bc0efec97c850.js Show response
react.dev/_next/static/chunks/ 5 KB
2 KB 53ms
48ms Script
application/javascript 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/chunks/webpack-966bc0efec97c850.js

Requested by

Host: react.dev
URL: https://react.dev/learn/updating-arrays-in-state

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

0f0d84c43255b21ab6aed7ffbb244d7a73462aebbafb6b79a31287690c14b4fc

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::2864q-1712341158613-51d21e8a27be
age: 207734
x-matched-path: /_next/static/chunks/webpack-966bc0efec97c850.js
etag: W/"6f0e21cf46133e33bb4087b37816fa45"
x-vercel-cache: HIT
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="webpack-966bc0efec97c850.js"

GET
H2 200 framework-1f5321399f6bc226.js Show response
react.dev/_next/static/chunks/ 178 KB
58 KB 51ms
46ms Script
application/javascript 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/chunks/framework-1f5321399f6bc226.js

Requested by

Host: react.dev
URL: https://react.dev/learn/updating-arrays-in-state

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

22553808568f5df039706cbc9d61dc3485899a6e11e48c319ddb8ec0e2a9b261

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::w7cdq-1712341158613-f7d271270e34
age: 201487
x-matched-path: /_next/static/chunks/framework-1f5321399f6bc226.js
etag: W/"b11487598616f6766d85b91a3f4af907"
x-vercel-cache: HIT
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="framework-1f5321399f6bc226.js"

GET
H2 200 main-78a3b4c2aa4e4850.js Show response
react.dev/_next/static/chunks/ 92 KB
28 KB 88ms
83ms Script
application/javascript 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/chunks/main-78a3b4c2aa4e4850.js

Requested by

Host: react.dev
URL: https://react.dev/learn/updating-arrays-in-state

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

aba5b772db99545122613acc819b2ad83eb32934b936b4141cc3eacc5cdb48b5

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::vpxwd-1712341158613-7149047eb16d
age: 195762
x-matched-path: /_next/static/chunks/main-78a3b4c2aa4e4850.js
etag: W/"ae775ea5f545aeb5e88a53bb497cb712"
x-vercel-cache: HIT
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="main-78a3b4c2aa4e4850.js"

GET
H2 200 _app-dd0b77ea7bd5b246.js Show response
react.dev/_next/static/chunks/pages/ 1 KB
813 B 88ms
84ms Script
application/javascript 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/chunks/pages/_app-dd0b77ea7bd5b246.js

Requested by

Host: react.dev
URL: https://react.dev/learn/updating-arrays-in-state

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

3acb347dfb26bce2a8393a826e7a364cfdf9835e40d27ca52db1ec0286f78b22

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::hq982-1712341158613-a47e9ac44ce2
age: 238896
x-matched-path: /_next/static/chunks/pages/_app-dd0b77ea7bd5b246.js
etag: W/"0d03090d675e55d83cf44dfdbc8e69dc"
x-vercel-cache: HIT
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="_app-dd0b77ea7bd5b246.js"

GET
H2 200 848-122f91e9565d9ffa.js Show response
react.dev/_next/static/chunks/ 22 KB
9 KB 53ms
49ms Script
application/javascript 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/chunks/848-122f91e9565d9ffa.js

Requested by

Host: react.dev
URL: https://react.dev/learn/updating-arrays-in-state

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

c796ea30cd5cf7d0e4ffd21a63eabd789656a0bd428317f5bf695f18578e3ac7

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::6vmdv-1712341158613-2f601dc22281
age: 238942
x-matched-path: /_next/static/chunks/848-122f91e9565d9ffa.js
etag: W/"b76ba1006c2a1a70dfd6d4e110c98bc9"
x-vercel-cache: HIT
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="848-122f91e9565d9ffa.js"

GET
H2 200 363-a8d665e2b0498112.js Show response
react.dev/_next/static/chunks/ 224 KB
71 KB 57ms
53ms Script
application/javascript 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/chunks/363-a8d665e2b0498112.js

Requested by

Host: react.dev
URL: https://react.dev/learn/updating-arrays-in-state

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

5734c80e5c592a12d1eeba13bf58771bb6154498ae9c6a855a11487c8bc5a8f8

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::7wrzr-1712341158613-80e65529b624
age: 238942
x-matched-path: /_next/static/chunks/363-a8d665e2b0498112.js
etag: W/"8f7794c5cbd0fe6ff112f41344d0468b"
x-vercel-cache: HIT
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="363-a8d665e2b0498112.js"

GET
H2 200 %5B%5B...markdownPath%5D%5D-15220bc1ae141f93.js Show response
react.dev/_next/static/chunks/pages/ 10 KB
3 KB 50ms
47ms Script
application/javascript 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/chunks/pages/%5B%5B...markdownPath%5D%5D-15220bc1ae141f93.js

Requested by

Host: react.dev
URL: https://react.dev/learn/updating-arrays-in-state

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

b6602909e851901f3522c32f171b82e423d2890b03f78792b4b138cd1e68f030

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::pwklx-1712341158613-39eca43e3c96
age: 207097
x-matched-path: /_next/static/chunks/pages/%5B%5B...markdownPath%5D%5D-15220bc1ae141f93.js
etag: W/"e11730035fff66dcab5f2a73c0f13a53"
x-vercel-cache: HIT
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="[[...markdownPath]]-15220bc1ae141f93.js"

GET
H2 200 _buildManifest.js Show response
react.dev/_next/static/MSg3eOIWTtnRfkmbhSsUL/ 758 B
944 B 87ms
84ms Script
application/javascript 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/MSg3eOIWTtnRfkmbhSsUL/_buildManifest.js

Requested by

Host: react.dev
URL: https://react.dev/learn/updating-arrays-in-state

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

b86a3da4faee205b135e47daa2dea3d57b4e446c59ca0c3fe89a72ced39f2c5b

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::b642b-1712341158613-914b729dd106
age: 238946
x-matched-path: /_next/static/MSg3eOIWTtnRfkmbhSsUL/_buildManifest.js
etag: "7c20d7f09305553ebf35e356f35e33aa"
x-vercel-cache: HIT
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="_buildManifest.js"
accept-ranges: bytes
content-length: 758

GET
H2 200 _ssgManifest.js Show response
react.dev/_next/static/MSg3eOIWTtnRfkmbhSsUL/ 154 B
382 B 125ms
121ms Script
application/javascript 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/MSg3eOIWTtnRfkmbhSsUL/_ssgManifest.js

Requested by

Host: react.dev
URL: https://react.dev/learn/updating-arrays-in-state

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

e67d28a1d8ecf64e18f49e40a78e8f1fe827b7f976e40f0ec168b24b739ba490

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::cpjlv-1712341158650-f40ae5693e75
age: 195037
x-matched-path: /_next/static/MSg3eOIWTtnRfkmbhSsUL/_ssgManifest.js
etag: "f94efc0b034dd5bf6ed6eccb3d0efe44"
x-vercel-cache: HIT
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="_ssgManifest.js"
accept-ranges: bytes
content-length: 154

GET
H2 200 Source-Code-Pro-Regular.woff2
react.dev/fonts/ 10 KB
10 KB 124ms
121ms Font
font/woff2 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/fonts/Source-Code-Pro-Regular.woff2

Requested by

Host: react.dev
URL: https://react.dev/learn/updating-arrays-in-state

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

1ad7bcfc6aa0eb7ed8d7ad95196e5743d74881d8698d19322768d3c4ef4c0563

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
Origin: https://react.dev
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::7wrzr-1712341158650-ef9fc80f2a4d
age: 238942
x-matched-path: /fonts/Source-Code-Pro-Regular.woff2
etag: "9145fb44c6ba87bc0c814908bbee0016"
x-vercel-cache: HIT
content-type: font/woff2
access-control-allow-origin: *
cache-control: public, max-age=31536000, immutable
content-disposition: inline; filename="Source-Code-Pro-Regular.woff2"
accept-ranges: bytes
content-length: 9880

GET
H2 200 Optimistic_Display_W_Md.woff2
react.dev/fonts/ 23 KB
23 KB 126ms
123ms Font
font/woff2 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/fonts/Optimistic_Display_W_Md.woff2

Requested by

Host: react.dev
URL: https://react.dev/learn/updating-arrays-in-state

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

335c9d533de28d205ef071d85c8950c0eff5e2301d4a0f970883daad43bd7fe8

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
Origin: https://react.dev
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::w7cdq-1712341158650-4971bb0d1235
age: 199360
x-matched-path: /fonts/Optimistic_Display_W_Md.woff2
etag: "b94d924d7a6e3e5baa6949789140566d"
x-vercel-cache: HIT
content-type: font/woff2
access-control-allow-origin: *
cache-control: public, max-age=31536000, immutable
content-disposition: inline; filename="Optimistic_Display_W_Md.woff2"
accept-ranges: bytes
content-length: 23376

GET
H2 200 Optimistic_Display_W_SBd.woff2
react.dev/fonts/ 23 KB
23 KB 124ms
121ms Font
font/woff2 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/fonts/Optimistic_Display_W_SBd.woff2

Requested by

Host: react.dev
URL: https://react.dev/learn/updating-arrays-in-state

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

b59f10bb1099f5ae0bc01feeeea866a165fcff6884ec7f23ba3e093624241a2e

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
Origin: https://react.dev
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::6vmdv-1712341158650-19ac611fa350
age: 238942
x-matched-path: /fonts/Optimistic_Display_W_SBd.woff2
etag: "2472628901899fae053c0438373dccba"
x-vercel-cache: HIT
content-type: font/woff2
access-control-allow-origin: *
cache-control: public, max-age=31536000, immutable
content-disposition: inline; filename="Optimistic_Display_W_SBd.woff2"
accept-ranges: bytes
content-length: 23596

GET
H2 200 Optimistic_Display_W_Bd.woff2
react.dev/fonts/ 23 KB
23 KB 122ms
120ms Font
font/woff2 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/fonts/Optimistic_Display_W_Bd.woff2

Requested by

Host: react.dev
URL: https://react.dev/learn/updating-arrays-in-state

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

3d871b7ae91fc21d06a37410cda737d25a9ef079364108b1618d1b34e432ae06

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
Origin: https://react.dev
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::hq982-1712341158650-9de6e9708f7c
age: 238942
x-matched-path: /fonts/Optimistic_Display_W_Bd.woff2
etag: "ab1a82ac9825f20b65c5b12b9e5b4522"
x-vercel-cache: HIT
content-type: font/woff2
access-control-allow-origin: *
cache-control: public, max-age=31536000, immutable
content-disposition: inline; filename="Optimistic_Display_W_Bd.woff2"
accept-ranges: bytes
content-length: 23628

GET
H2 200 Optimistic_Text_W_Md.woff2
react.dev/fonts/ 23 KB
23 KB 124ms
122ms Font
font/woff2 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/fonts/Optimistic_Text_W_Md.woff2

Requested by

Host: react.dev
URL: https://react.dev/learn/updating-arrays-in-state

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

38e55fa471a89bdf7b9829cf03424d13252f381a9ff672da0feab3a611151f19

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
Origin: https://react.dev
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::2864q-1712341158650-b8f06b290012
age: 208556
x-matched-path: /fonts/Optimistic_Text_W_Md.woff2
etag: "39fb4f12988ae872b4c5e1032fd35100"
x-vercel-cache: HIT
content-type: font/woff2
access-control-allow-origin: *
cache-control: public, max-age=31536000, immutable
content-disposition: inline; filename="Optimistic_Text_W_Md.woff2"
accept-ranges: bytes
content-length: 23468

GET
H2 200 Optimistic_Text_W_Bd.woff2
react.dev/fonts/ 23 KB
23 KB 89ms
87ms Font
font/woff2 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/fonts/Optimistic_Text_W_Bd.woff2

Requested by

Host: react.dev
URL: https://react.dev/learn/updating-arrays-in-state

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

559c4ddcfdefa492d1fb900756ae408859355cb17e6c29d9928ba79235c05027

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
Origin: https://react.dev
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::zjjlq-1712341158650-11a55b7a0c38
age: 202089
x-matched-path: /fonts/Optimistic_Text_W_Bd.woff2
etag: "0711e7d28a5c4e1474aa9e9431d5f96f"
x-vercel-cache: HIT
content-type: font/woff2
access-control-allow-origin: *
cache-control: public, max-age=31536000, immutable
content-disposition: inline; filename="Optimistic_Text_W_Bd.woff2"
accept-ranges: bytes
content-length: 23528

GET
H2 200 Optimistic_Text_W_Rg.woff2
react.dev/fonts/ 22 KB
22 KB 121ms
119ms Font
font/woff2 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/fonts/Optimistic_Text_W_Rg.woff2

Requested by

Host: react.dev
URL: https://react.dev/learn/updating-arrays-in-state

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

916eeb8b981099e4bd15357415eb668d0ce87c471fc8d0a9c6020325521982ca

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
Origin: https://react.dev
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::pwklx-1712341158650-1daa84ea3441
age: 206633
x-matched-path: /fonts/Optimistic_Text_W_Rg.woff2
etag: "c8d0261ba42237305aa180dfb7314898"
x-vercel-cache: HIT
content-type: font/woff2
access-control-allow-origin: *
cache-control: public, max-age=31536000, immutable
content-disposition: inline; filename="Optimistic_Text_W_Rg.woff2"
accept-ranges: bytes
content-length: 22652

GET
H2 200 Optimistic_Text_W_It.woff2
react.dev/fonts/ 25 KB
25 KB 124ms
123ms Font
font/woff2 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/fonts/Optimistic_Text_W_It.woff2

Requested by

Host: react.dev
URL: https://react.dev/learn/updating-arrays-in-state

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

e06ec368e3c0ce630a153d1151138fe8ad41dbdc322a06daaa14b64ff52c7b27

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
Origin: https://react.dev
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::g4pcp-1712341158650-fc807969e55f
age: 158271
x-matched-path: /fonts/Optimistic_Text_W_It.woff2
etag: "1aba368d5d58feedad46e833d23d557b"
x-vercel-cache: HIT
content-type: font/woff2
access-control-allow-origin: *
cache-control: public, max-age=31536000, immutable
content-disposition: inline; filename="Optimistic_Text_W_It.woff2"
accept-ranges: bytes
content-length: 25604

GET
H2 200 Optimistic_Text_W_BdIt.woff2
react.dev/fonts/ 26 KB
26 KB 46ms
46ms Font
font/woff2 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/fonts/Optimistic_Text_W_BdIt.woff2

Requested by

Host: react.dev
URL: https://react.dev/_next/static/css/cc74adab25fc8816.css

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

72350a2c90d1b1ba96f77388e5b3af348b048d20849d1b1ccbdd16533678c710

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/_next/static/css/cc74adab25fc8816.css
Origin: https://react.dev
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::2g76s-1712341158852-7f53923cc547
age: 221678
x-matched-path: /fonts/Optimistic_Text_W_BdIt.woff2
etag: "27d9dfd5f0726f71a509f17d019bc577"
x-vercel-cache: HIT
content-type: font/woff2
access-control-allow-origin: *
cache-control: public, max-age=31536000, immutable
content-disposition: inline; filename="Optimistic_Text_W_BdIt.woff2"
accept-ranges: bytes
content-length: 26216

GET
H2 200 4ad82c5e.5ad7638acf1934bf.js
react.dev/_next/static/chunks/ 0
50 KB 54ms
52ms Other
application/javascript 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/chunks/4ad82c5e.5ad7638acf1934bf.js

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/webpack-966bc0efec97c850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::fkhgt-1712341158920-91c94dd8d77d
age: 197571
x-matched-path: /_next/static/chunks/4ad82c5e.5ad7638acf1934bf.js
etag: W/"8dae3f148c586ab33d43069686d7e88b"
x-vercel-cache: HIT
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="4ad82c5e.5ad7638acf1934bf.js"

GET
H2 200 850.4ff8dde798ea3c07.js
react.dev/_next/static/chunks/ 0
109 KB 48ms
46ms Other
application/javascript 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/chunks/850.4ff8dde798ea3c07.js

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/webpack-966bc0efec97c850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::6g8q6-1712341158920-b8e91c1eef08
age: 194040
x-matched-path: /_next/static/chunks/850.4ff8dde798ea3c07.js
etag: W/"77c2c74956274d2ac1475a3bca85526b"
x-vercel-cache: HIT
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="850.4ff8dde798ea3c07.js"

GET
H2 200 300.4825f9499b22342c.js
react.dev/_next/static/chunks/ 0
4 KB 47ms
46ms Other
application/javascript 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/chunks/300.4825f9499b22342c.js

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/webpack-966bc0efec97c850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::cpjlv-1712341158920-377890cab889
age: 191610
x-matched-path: /_next/static/chunks/300.4825f9499b22342c.js
etag: W/"50fe70a146ce62af9a156a639c5175cf"
x-vercel-cache: HIT
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="300.4825f9499b22342c.js"

GET
H2 200 4ad82c5e.5ad7638acf1934bf.js Show response
react.dev/_next/static/chunks/ 149 KB
50 KB 48ms
47ms Script
application/javascript 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/chunks/4ad82c5e.5ad7638acf1934bf.js

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/webpack-966bc0efec97c850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

2684c60e8c38e206e313790c460611ea6637526859df330438dce6cc1c8fc0e8

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::sjnk6-1712341158921-a170ae6120ee
age: 238942
x-matched-path: /_next/static/chunks/4ad82c5e.5ad7638acf1934bf.js
etag: W/"8dae3f148c586ab33d43069686d7e88b"
x-vercel-cache: HIT
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="4ad82c5e.5ad7638acf1934bf.js"

GET
H2 200 850.4ff8dde798ea3c07.js Show response
react.dev/_next/static/chunks/ 296 KB
109 KB 46ms
45ms Script
application/javascript 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/chunks/850.4ff8dde798ea3c07.js

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/webpack-966bc0efec97c850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

9ee39cc5f4bdb345698d3b431a271e101bc846f7d25c88ada53c712f695dfbcd

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::2864q-1712341158920-483edd959289
age: 207591
x-matched-path: /_next/static/chunks/850.4ff8dde798ea3c07.js
etag: W/"77c2c74956274d2ac1475a3bca85526b"
x-vercel-cache: HIT
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="850.4ff8dde798ea3c07.js"

GET
H2 200 300.4825f9499b22342c.js Show response
react.dev/_next/static/chunks/ 11 KB
4 KB 47ms
47ms Script
application/javascript 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/chunks/300.4825f9499b22342c.js

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/webpack-966bc0efec97c850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

ef7263ccacd1c42674a255e1cd5f79acafa9a51ae10f9302a18c445b46294529

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:18 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::kmjkn-1712341158920-0333d104c688
age: 161888
x-matched-path: /_next/static/chunks/300.4825f9499b22342c.js
etag: W/"50fe70a146ce62af9a156a639c5175cf"
x-vercel-cache: HIT
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="300.4825f9499b22342c.js"

POST
H2 204 collect
region1.google-analytics.com/g/ 0
249 B 168ms
38ms Ping
text/plain 2001:4860:4802:32::36
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL: https://region1.google-analytics.com/g/collect?v=2&tid=G-B1E83PJ3RT&gtm=45je4430v9119811439za200&_p=1712341158647&gcd=13l3l3l3l1&npa=0&dma=0&cid=1997348430.1712341159&ul=en-us&sr=800x600&uaa=x86&uab=64&uafvl=Google%2520Chrome%3B123.0.6312.105%7CNot%253AA-Brand%3B8.0.0.0%7CChromium%3B123.0.6312.105&uamb=0&uam=&uap=Win32&uapv=10.0.0&uaw=0&pscdl=noapi&_s=1&sid=1712341158&sct=1&seg=0&dl=https%3A%2F%2Freact.dev%2Flearn%2Fupdating-arrays-in-state&dt=Updating%20Arrays%20in%20State%20%E2%80%93%20React&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=610
Requested by: Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtag/js?id=G-B1E83PJ3RT
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2001:4860:4802:32::36 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
Software: Golfe2 /
Resource Hash: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

pragma: no-cache
date: Fri, 05 Apr 2024 18:19:19 GMT
server: Golfe2
content-type: text/plain
access-control-allow-origin: https://react.dev
cache-control: no-cache, no-store, must-revalidate
access-control-allow-credentials: true
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length: 0
expires: Fri, 01 Jan 1990 00:00:00 GMT

GET
H2 200 49ea8ca6.b06d9bb6758159c5.js Show response
react.dev/_next/static/chunks/ 92 KB
28 KB 70ms
68ms Script
application/javascript 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/chunks/49ea8ca6.b06d9bb6758159c5.js

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/webpack-966bc0efec97c850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

5e45df434d773bf049645bae4031491b85a8a0f7e6497e6d5581f55f5f5e20c7

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::2864q-1712341159069-d977f3c9108e
age: 208640
x-matched-path: /_next/static/chunks/49ea8ca6.b06d9bb6758159c5.js
etag: W/"c358910f02b232448f4cb1225dbf8533"
x-vercel-cache: HIT
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="49ea8ca6.b06d9bb6758159c5.js"

GET
H2 200 759.27a790f35a69589c.js Show response
react.dev/_next/static/chunks/ 69 KB
24 KB 71ms
70ms Script
application/javascript 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/chunks/759.27a790f35a69589c.js

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/webpack-966bc0efec97c850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

062b607555903a7a84e3fc421952226ac60e2e3ccdec6073a2dd0d5e51fe40ed

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::6vmdv-1712341159069-24c8196b534b
age: 238942
x-matched-path: /_next/static/chunks/759.27a790f35a69589c.js
etag: W/"8cb8f78acf914c1d1f32a8fbdb9fc044"
x-vercel-cache: HIT
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="759.27a790f35a69589c.js"

GET
H2 200 929.690230c8972d0950.js Show response
react.dev/_next/static/chunks/ 26 KB
10 KB 65ms
65ms Script
application/javascript 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/chunks/929.690230c8972d0950.js

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/webpack-966bc0efec97c850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

ff961c8374ecb94f32fa4b0f9d8b995d94a63bad8a4c304e5010bf9215af54f0

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::2g76s-1712341159069-400cf254314c
age: 207309
x-matched-path: /_next/static/chunks/929.690230c8972d0950.js
etag: W/"e40f0426b8bf31749d2ed4f1b44932bb"
x-vercel-cache: HIT
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="929.690230c8972d0950.js"

GET
H2 200 index.json Show response
react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/ 118 B
317 B 66ms
66ms Fetch
application/json 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/index.json

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/main-78a3b4c2aa4e4850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

e2ca484d16da1ce774c101c573ca677ed0a6c636b295f1d096e3e7f0cc302582

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
purpose: prefetch
x-nextjs-data: 1
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Referer: https://react.dev/learn/updating-arrays-in-state
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::7wrzr-1712341159069-c93a966c7f66
age: 238942
x-matched-path: /_next/data/MSg3eOIWTtnRfkmbhSsUL/index.json
etag: "1cfea50b6f0ffcd23c2c4ffbc99a9efc"
x-vercel-cache: HIT
content-type: application/json; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=0, must-revalidate
content-disposition: inline; filename="index.json"
accept-ranges: bytes
content-length: 118

GET
H2 200 learn.json Show response
react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/ 30 KB
7 KB 61ms
60ms Fetch
application/json 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn.json?markdownPath=learn

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/main-78a3b4c2aa4e4850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

2c361846b769149aa6e174e30f5ae30e7da329bab48d7bc241592e439ffeff14

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
purpose: prefetch
x-nextjs-data: 1
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Referer: https://react.dev/learn/updating-arrays-in-state
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::pwklx-1712341159069-34ed56aea232
age: 207445
x-matched-path: /_next/data/MSg3eOIWTtnRfkmbhSsUL/learn.json
etag: W/"7cde624de418103ee493e45ba3920347"
x-vercel-cache: HIT
content-type: application/json; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=0, must-revalidate
content-disposition: inline; filename="learn.json"

GET
H2 200 react.json Show response
react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/reference/ 5 KB
1 KB 63ms
63ms Fetch
application/json 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/reference/react.json?markdownPath=reference&markdownPath=react

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/main-78a3b4c2aa4e4850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

d753cb97d2ab133c838a8751287326b1b10ccbdf04c96d0eebe0e39aa63ae207

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
purpose: prefetch
x-nextjs-data: 1
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Referer: https://react.dev/learn/updating-arrays-in-state
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::hq982-1712341159069-b568ec0a81d3
age: 238942
x-matched-path: /_next/data/MSg3eOIWTtnRfkmbhSsUL/reference/react.json
etag: W/"2e0581f163d3b67d0fae93c748fb1672"
x-vercel-cache: HIT
content-type: application/json; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=0, must-revalidate
content-disposition: inline; filename="react.json"

GET
H2 200 community.json Show response
react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/ 4 KB
1 KB 66ms
65ms Fetch
application/json 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/community.json?markdownPath=community

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/main-78a3b4c2aa4e4850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

3d941a5f48b1dec342eda77f56466f6819206d23f33aac8bf9b37c8cf809c9b8

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
purpose: prefetch
x-nextjs-data: 1
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Referer: https://react.dev/learn/updating-arrays-in-state
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::ccpv8-1712341159069-d3658583b5af
age: 201963
x-matched-path: /_next/data/MSg3eOIWTtnRfkmbhSsUL/community.json
etag: W/"39e6d06e0482b28407599dabe0e63150"
x-vercel-cache: HIT
content-type: application/json; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=0, must-revalidate
content-disposition: inline; filename="community.json"

GET
H2 200 blog.json Show response
react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/ 7 KB
3 KB 63ms
63ms Fetch
application/json 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/blog.json?markdownPath=blog

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/main-78a3b4c2aa4e4850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

2d5e90573f3cba970ac58a4206b918a106b1a41db2c83fbc8190bd76b393b859

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
purpose: prefetch
x-nextjs-data: 1
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Referer: https://react.dev/learn/updating-arrays-in-state
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::zjjlq-1712341159069-bec5c0cae29f
age: 202119
x-matched-path: /_next/data/MSg3eOIWTtnRfkmbhSsUL/blog.json
etag: W/"6ed1916e7e1153a1b7f6578cbd83d675"
x-vercel-cache: HIT
content-type: application/json; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=0, must-revalidate
content-disposition: inline; filename="blog.json"

GET
H2 200 favicon.ico
react.dev/ 4 KB
2 KB 64ms
63ms Other
image/vnd.microsoft.icon 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/favicon.ico

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

b41c7f5ede376281469b08765dbabf9a2fb437c7cf37350721195498a2e1a994

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::bc7gm-1712341159069-e993218d2678
age: 205399
x-matched-path: /favicon.ico
etag: W/"4c7637ed71a835071f3859d811d4854a"
x-vercel-cache: HIT
content-type: image/vnd.microsoft.icon
access-control-allow-origin: *
cache-control: public, max-age=0, must-revalidate
content-disposition: inline; filename="favicon.ico"

GET
H2 200 installation.json Show response
react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/ 5 KB
2 KB 53ms
52ms Fetch
application/json 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/installation.json?markdownPath=learn&markdownPath=installation

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/main-78a3b4c2aa4e4850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

e7c7e1493c8009aac478cd8b9b4c63fdb41d1ac56d14195c9ad375087d149223

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
purpose: prefetch
x-nextjs-data: 1
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Referer: https://react.dev/learn/updating-arrays-in-state
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::cfpkn-1712341159070-99499616125d
age: 218476
x-matched-path: /_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/installation.json
etag: W/"44ffb80915d02d662d0d3f8a84324ba5"
x-vercel-cache: HIT
content-type: application/json; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=0, must-revalidate
content-disposition: inline; filename="installation.json"

GET
H2 200 describing-the-ui.json Show response
react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/ 25 KB
6 KB 58ms
58ms Fetch
application/json 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/describing-the-ui.json?markdownPath=learn&markdownPath=describing-the-ui

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/main-78a3b4c2aa4e4850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

268b405c4b52d634af002c36d83fc0f4719583376396aab4bb8908c2d67ac79a

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
purpose: prefetch
x-nextjs-data: 1
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Referer: https://react.dev/learn/updating-arrays-in-state
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::sqj45-1712341159070-71f6398bd08a
age: 198511
x-matched-path: /_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/describing-the-ui.json
etag: W/"f9def85431ca3970da7036a73c0687aa"
x-vercel-cache: HIT
content-type: application/json; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=0, must-revalidate
content-disposition: inline; filename="describing-the-ui.json"

GET
H2 200 adding-interactivity.json Show response
react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/ 33 KB
8 KB 58ms
58ms Fetch
application/json 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/adding-interactivity.json?markdownPath=learn&markdownPath=adding-interactivity

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/main-78a3b4c2aa4e4850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

6adb688e832c4844b0a96580624217822ef49b29fd579bf4df1c3549326f0683

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
purpose: prefetch
x-nextjs-data: 1
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Referer: https://react.dev/learn/updating-arrays-in-state
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::pl62l-1712341159070-131c7d29105e
age: 211212
x-matched-path: /_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/adding-interactivity.json
etag: W/"64b61a178f46cb97707735956c1f69e7"
x-vercel-cache: HIT
content-type: application/json; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=0, must-revalidate
content-disposition: inline; filename="adding-interactivity.json"

GET
H2 200 responding-to-events.json Show response
react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/ 41 KB
8 KB 50ms
50ms Fetch
application/json 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/responding-to-events.json?markdownPath=learn&markdownPath=responding-to-events

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/main-78a3b4c2aa4e4850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

d2e5b5a0945567aafc9aefe1c717c46b57e004415f35bb453de8b15b43ca0b06

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
purpose: prefetch
x-nextjs-data: 1
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Referer: https://react.dev/learn/updating-arrays-in-state
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::pwklx-1712341159071-6ee139439c6a
age: 238818
x-matched-path: /_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/responding-to-events.json
etag: W/"25b37f642f1df4f727e0c652bf5b3ef5"
x-vercel-cache: HIT
content-type: application/json; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=0, must-revalidate
content-disposition: inline; filename="responding-to-events.json"

GET
H2 200 state-a-components-memory.json Show response
react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/ 81 KB
12 KB 51ms
51ms Fetch
application/json 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/state-a-components-memory.json?markdownPath=learn&markdownPath=state-a-components-memory

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/main-78a3b4c2aa4e4850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

4fef5b52e087d29c1b5b30df81ff273d265be11d6573e555d9b67cf51fc1dae3

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
purpose: prefetch
x-nextjs-data: 1
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Referer: https://react.dev/learn/updating-arrays-in-state
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::hq982-1712341159071-76706c394e6a
age: 238921
x-matched-path: /_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/state-a-components-memory.json
etag: W/"331918193d6f25f8784fe398b319afb0"
x-vercel-cache: HIT
content-type: application/json; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=0, must-revalidate
content-disposition: inline; filename="state-a-components-memory.json"

GET
H2 200 render-and-commit.json Show response
react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/ 16 KB
4 KB 52ms
52ms Fetch
application/json 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/render-and-commit.json?markdownPath=learn&markdownPath=render-and-commit

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/main-78a3b4c2aa4e4850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

08292cba6323db51cdf5c1d35b8d5e14cedc258bca8ca0892dafb62581ed2b0d

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
purpose: prefetch
x-nextjs-data: 1
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Referer: https://react.dev/learn/updating-arrays-in-state
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::zjjlq-1712341159071-9e4222de7f1f
age: 238942
x-matched-path: /_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/render-and-commit.json
etag: W/"c41ad97608ea5c45efb8a414a31f22f0"
x-vercel-cache: HIT
content-type: application/json; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=0, must-revalidate
content-disposition: inline; filename="render-and-commit.json"

GET
H2 200 state-as-a-snapshot.json Show response
react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/ 24 KB
5 KB 53ms
53ms Fetch
application/json 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/state-as-a-snapshot.json?markdownPath=learn&markdownPath=state-as-a-snapshot

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/main-78a3b4c2aa4e4850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

29a748eeed2b4ad6809bb8d45db12120c900c35cd3f04b014a7ba6a5e2e6ab72

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
purpose: prefetch
x-nextjs-data: 1
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Referer: https://react.dev/learn/updating-arrays-in-state
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::7wrzr-1712341159071-e1d43af00cc6
age: 238884
x-matched-path: /_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/state-as-a-snapshot.json
etag: W/"7ef8f0ef2498b8c03a0b4aea5d026e12"
x-vercel-cache: HIT
content-type: application/json; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=0, must-revalidate
content-disposition: inline; filename="state-as-a-snapshot.json"

GET
H2 200 queueing-a-series-of-state-updates.json Show response
react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/ 31 KB
6 KB 53ms
52ms Fetch
application/json 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/queueing-a-series-of-state-updates.json?markdownPath=learn&markdownPath=queueing-a-series-of-state-updates

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/main-78a3b4c2aa4e4850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

e51be3cfbc427c04e680520e01e360f0237748216e0812688a55adc20918a62d

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
purpose: prefetch
x-nextjs-data: 1
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Referer: https://react.dev/learn/updating-arrays-in-state
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::2g76s-1712341159072-aee620ba9886
age: 197876
x-matched-path: /_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/queueing-a-series-of-state-updates.json
etag: W/"55c584a72ec95bee351b34a44e3ba8c2"
x-vercel-cache: HIT
content-type: application/json; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=0, must-revalidate
content-disposition: inline; filename="queueing-a-series-of-state-updates.json"

GET
H2 200 updating-objects-in-state.json Show response
react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/ 56 KB
10 KB 54ms
53ms Fetch
application/json 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/updating-objects-in-state.json?markdownPath=learn&markdownPath=updating-objects-in-state

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/main-78a3b4c2aa4e4850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

7bd59d78175f0a456dabd8c47489892261431e1ffcf1712b1b79b6738a241af2

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
purpose: prefetch
x-nextjs-data: 1
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Referer: https://react.dev/learn/updating-arrays-in-state
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::ccpv8-1712341159072-42571153db32
age: 224975
x-matched-path: /_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/updating-objects-in-state.json
etag: W/"ceb3c126fa2d4fad72d4a472d0a226d3"
x-vercel-cache: HIT
content-type: application/json; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=0, must-revalidate
content-disposition: inline; filename="updating-objects-in-state.json"

GET
H2 200 updating-arrays-in-state.json Show response
react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/ 67 KB
10 KB 55ms
54ms Fetch
application/json 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/updating-arrays-in-state.json?markdownPath=learn&markdownPath=updating-arrays-in-state

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/main-78a3b4c2aa4e4850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

0d38b5921d6f7e8a73946409beaa32aa87b9a7cd9a89ad038c97cba68022154f

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
purpose: prefetch
x-nextjs-data: 1
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Referer: https://react.dev/learn/updating-arrays-in-state
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::zvr7j-1712341159072-e439810b6851
age: 227769
x-matched-path: /_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/updating-arrays-in-state.json
etag: W/"021f43945ab12918d79b9b77ca59d4f0"
x-vercel-cache: HIT
content-type: application/json; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=0, must-revalidate
content-disposition: inline; filename="updating-arrays-in-state.json"

GET
H2 200 managing-state.json Show response
react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/ 35 KB
8 KB 55ms
55ms Fetch
application/json 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/managing-state.json?markdownPath=learn&markdownPath=managing-state

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/main-78a3b4c2aa4e4850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

34c1ccca43d08d60ce223d8c040a10bfe102a088c24e52e6ab26d0eda4e4db8a

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
purpose: prefetch
x-nextjs-data: 1
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Referer: https://react.dev/learn/updating-arrays-in-state
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::tvgx4-1712341159072-6892565de736
age: 198238
x-matched-path: /_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/managing-state.json
etag: W/"b6e5a2f2ec519c67955726baade9e40f"
x-vercel-cache: HIT
content-type: application/json; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=0, must-revalidate
content-disposition: inline; filename="managing-state.json"

GET
H2 200 escape-hatches.json Show response
react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/ 37 KB
8 KB 54ms
54ms Fetch
application/json 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/escape-hatches.json?markdownPath=learn&markdownPath=escape-hatches

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/main-78a3b4c2aa4e4850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

058bed3ec93cb44da7c051873b5bf6395e8b8418f88c9df74c779d5499d94175

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
purpose: prefetch
x-nextjs-data: 1
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Referer: https://react.dev/learn/updating-arrays-in-state
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::2864q-1712341159073-3e17fd585021
age: 209582
x-matched-path: /_next/data/MSg3eOIWTtnRfkmbhSsUL/learn/escape-hatches.json
etag: W/"8de5b43be7f1b76956c61a05846987e8"
x-vercel-cache: HIT
content-type: application/json; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=0, must-revalidate
content-disposition: inline; filename="escape-hatches.json"

GET
H2 200 757.fb8694b8cb13f238.js Show response
react.dev/_next/static/chunks/ 14 KB
6 KB 46ms
45ms Script
application/javascript 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/chunks/757.fb8694b8cb13f238.js

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/webpack-966bc0efec97c850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

253c95aeceb2d0c3c0c7c79c99db292267afb0f8baf023a8cd031c056fa8d03c

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::g4pcp-1712341159201-4762531cc2b1
age: 161986
x-matched-path: /_next/static/chunks/757.fb8694b8cb13f238.js
etag: W/"2255cd89a7b1b491ac6f34210cdf88a1"
x-vercel-cache: HIT
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="757.fb8694b8cb13f238.js"

GET
H2 200 191.8a98ec8e52a030d5.js Show response
react.dev/_next/static/chunks/ 11 KB
4 KB 46ms
45ms Script
application/javascript 76.76.21.21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://react.dev/_next/static/chunks/191.8a98ec8e52a030d5.js

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/webpack-966bc0efec97c850.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),

Reverse DNS

Software

Vercel /

Resource Hash

b20274c789bf5c2dec37fb26fd538686ec6e4ff84e831504a318f3a397b3930f

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer: https://react.dev/learn/updating-arrays-in-state
accept-language: en-GB,en;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 05 Apr 2024 18:19:19 GMT
content-encoding: br
strict-transport-security: max-age=63072000
server: Vercel
x-vercel-id: fra1::g4pcp-1712341159210-8e25d3672d66
age: 162479
x-matched-path: /_next/static/chunks/191.8a98ec8e52a030d5.js
etag: W/"d30eca959872d8a0a6d32026e121e59e"
x-vercel-cache: HIT
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public,max-age=31536000,immutable
content-disposition: inline; filename="191.8a98ec8e52a030d5.js"

GET /
786946de.sandpack-bundler-4bw.pages.dev/ Frame 4759 0
0

GET
H3 200 /
786946de.sandpack-bundler-4bw.pages.dev/ Frame 4759 0
0 160ms
83ms Document
text/html 172.66.44.185
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://786946de.sandpack-bundler-4bw.pages.dev/

Requested by

Host: react.dev
URL: https://react.dev/_next/static/chunks/191.8a98ec8e52a030d5.js

Protocol

Security

QUIC, , AES_128_GCM

Server

172.66.44.185 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

Security Headers

Name	Value
X-Content-Type-Options	nosniff

Request headers

Referer: https://react.dev/
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
accept-language: en-GB,en;q=0.9
sec-ch-ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Win32"

Response headers

access-control-allow-origin: *
alt-svc: h3=":443"; ma=86400
cache-control: public, max-age=0, must-revalidate
cf-ray: 86fb8bb5e9296556-LHR
content-encoding: br
content-type: text/html; charset=utf-8
date: Fri, 05 Apr 2024 18:19:19 GMT
etag: W/"3d71478d53f4903681795c337b9fb830"
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
referrer-policy: strict-origin-when-cross-origin
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=YrpraXvQ3c301FMFByvQ5knD8GnPtQS5EfyCG5TYBco5UOiFygfILnNAcALcrBmR0uJ1NLXviXL887CaRGcr1JF1vs4grKdZC8zrLBz9gwHkx0Pz6IqVJ2058sGdNTgTUJN76MYag9wxk6z4jo6YsLw0NLHWbOwmFX8%3D"}],"group":"cf-nel","max_age":604800}
server: cloudflare
vary: Accept-Encoding
x-content-type-options: nosniff
x-robots-tag: noindex

Failed requests

These URLs were requested, but there was no response received. You will also see them in the list above.

Domain: 786946de.sandpack-bundler-4bw.pages.dev
URL: https://786946de.sandpack-bundler-4bw.pages.dev/

Verdicts & Comments Add Verdict or Comment

28 JavaScript Global Variables

These are the non-standard "global" variables defined on the window object. These can be helpful in identifying possible client-side frameworks and code.

2 Cookies

Cookies are little pieces of information stored in the browser of a user. Whenever a user visits the site again, he will also send his cookie values, thus allowing the website to re-identify him even if he changed locations. This is how permanent logins work.

			Domain/Path	Expires	Name / Value
			.react.dev/	1970-01-21 05:15:01	Name: _ga_B1E83PJ3RT Value: GS1.1.1712341158.1.0.1712341158.0.0.0
			.react.dev/	1970-01-21 05:15:01	Name: _ga Value: GA1.1.1997348430.1712341159

Security Headers

This page lists any security headers set by the main page. If you want to understand what these mean and how to use them, head on over to this page

Header	Value
Strict-Transport-Security	max-age=63072000

Indicators

This is a term in the security industry to describe indicators such as IPs, Domains, Hashes, etc. This does not imply that any of these indicate malicious activity.

786946de.sandpack-bundler-4bw.pages.dev
react.dev
region1.google-analytics.com
www.googletagmanager.com
786946de.sandpack-bundler-4bw.pages.dev
172.66.44.185
2001:4860:4802:32::36
2a00:1450:4001:82a::2008
76.76.21.21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react.dev Open in urlscan Pro 76.76.21.21 Public Scan

Summary

urlscan.io Verdict: No classification

Domain & IP information

Screenshot Live screenshot Full Image

Page Title

Page URL History Show full URLs

Detected technologies

Page Statistics

53 Requests

98 %HTTPS

50 %IPv6

4 Domains

4 Subdomains

5 IPs

2 Countries

1025 kBTransfer

2632 kBSize

2 Cookies

15 Outgoing links

Page URL History

Redirected requests

53 HTTP transactions Everything HTML Script AJAX CSS Image Expand all 0 data transactions

Request headers

Response headers

Redirect headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

react.dev Open in urlscan Pro
76.76.21.21 Public Scan

Screenshot
Live screenshot

Full Image

53
Requests

98 %
HTTPS

50 %
IPv6

4
Domains

4
Subdomains

5
IPs

2
Countries

1025 kB
Transfer

2632 kB
Size

2
Cookies

53 HTTP transactions
0 data transactions