www.w3schools.com Open in urlscan Pro
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1 forms found in the DOM

/action_page.php

<form class="search_in_content" action="/action_page.php">
  <input type="text" placeholder="Search..." id="search2" autocomplete="off" onkeydown="key_pressed_in_search(this, event)" oninput="find_search_results(this)" onfocus="find_search_results(this);">
</form>

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JS REFERENCE

JS by Category JS by Alphabet



JAVASCRIPT

JS Arrays
Array[ ] Array( ) at() concat() constructor copyWithin() entries() every()
fill() filter() find() findIndex() findLast() findLastIndex() flat() flatMap()
forEach() from() includes() indexOf() isArray() join() keys() lastIndexOf()
length map() of() pop() prototype push() reduce() reduceRight() reverse()
shift() slice() some() sort() splice() toReversed() toSorted() toSpliced()
toString() unshift() values() valueOf() with()
JS Boolean
constructor prototype toString() valueOf()
JS Classes
constructor() extends static super
JS Dates
new Date() constructor getDate() getDay() getFullYear() getHours()
getMilliseconds() getMinutes() getMonth() getSeconds() getTime()
getTimezoneOffset() getUTCDate() getUTCDay() getUTCFullYear() getUTCHours()
getUTCMilliseconds() getUTCMinutes() getUTCMonth() getUTCSeconds() now() parse()
prototype setDate() setFullYear() setHours() setMilliseconds() setMinutes()
setMonth() setSeconds() setTime() setUTCDate() setUTCFullYear() setUTCHours()
setUTCMilliseconds() setUTCMinutes() setUTCMonth() setUTCSeconds()
toDateString() toISOString() toJSON() toLocaleDateString() toLocaleTimeString()
toLocaleString() toString() toTimeString() toUTCString() UTC() valueOf()
JS Error
name message
JS Global
decodeURI() decodeURIComponent() encodeURI() encodeURIComponent() escape()
eval() Infinity isFinite() isNaN() NaN Number() parseFloat() parseInt() String()
undefined unescape()
JS JSON
parse() stringify()
JS Maps
new Map clear() delete() entries() forEach() get() groupBy() has() keys() set()
size values()
JS Math
abs() acos() acosh() asin() asinh() atan() atan2() atanh() cbrt() ceil() clz32()
cos() cosh() E exp() expm1() floor() fround() LN2 LN10 log() log10() log1p()
log2() LOG2E LOG10E max() min() PI pow() random() round() sign() sin() sinh()
sqrt() SQRT1_2 SQRT2 tan() tanh() trunc()
JS Numbers
constructor EPSILON isFinite() isInteger() isNaN() isSafeInteger()
MAX_SAFE_INTEGER MIN_SAFE_INTEGER MAX_VALUE MIN_VALUE NaN NEGATIVE_INFINITY
POSITIVE_INFINITY parseFloat() parseInt() prototype toExponential() toFixed()
toLocaleString() toPrecision() toString() valueOf()
JS Objects
assign() constructor create() defineProperties() defineProperty() entries()
freeze() fromEntries() getOwnPropertyDescriptor() getOwnPropertyDescriptors()
getOwnPropertyNames() groupBy() isExtensible() isFrozen() isSealed() keys()
preventExtensions() prototype seal() toString() valueOf() values()
JS Operators JS Precedence JS Promises
all() allSettled() any() catch() finally() race() reject() resolve() then()
JS RegExp
Modifiers: g i d m Groups: [abc] [^abc] [0-9] [^0-9] (x|y) Metacharacters: . \w
\W \d \D \s \S \b \B \0 \n \f \r \t \v \xxx \xdd \uxxxx Quantifiers: + * ? {X}
{X,Y} {X,} $ ^ ?= ?! Properties: constructor global ignoreCase lastIndex
multiline source Methods: compile() exec() test() toString()
JS Sets
new Set add() clear() delete() entries() forEach() has() keys() size values()
JS Statements
break class const continue debugger do...while for for...in for...of function
if...else let return switch throw try...catch var while
JS Strings
at() charAt() charCodeAt() codePointAt() concat() constructor endsWith()
fromCharCode() includes() indexOf() lastIndexOf() length localeCompare() match()
padEnd() padStart() prototype repeat() replace() replaceAll() search() slice()
split() startsWith() substr() substring() toLocaleLowerCase()
toLocaleUpperCase() toLowerCase() toString() toUpperCase() trim() trimEnd()
trimStart() valueOf()
JS TypedArray



WINDOW

Window Object
addeventlistener() alert() atob() blur() btoa() clearInterval() clearTimeout()
close() closed confirm() console defaultStatus document focus() frameElement
frames history getComputedStyle() innerHeight innerWidth length localStorage
location matchMedia() moveBy() moveTo() name navigator open() opener outerHeight
outerWidth pageXOffset pageYOffset parent print() prompt() removeEventlistener()
resizeBy() resizeTo() screen screenLeft screenTop screenX screenY scrollBy()
scrollTo() scrollX scrollY sessionStorage self setInterval() setTimeout() status
stop() top
Window Console
assert() clear() count() error() group() groupCollapsed() groupEnd() info()
log() table() time() timeEnd() trace() warn()
Window History
back() forward() go() length
Window Location
assign() hash host hostname href origin pathname port protocol reload()
replace() search
Window Navigator
appCodeName appName appVersion cookieEnabled geolocation javaEnabled() language
onLine platform product taintEnabled() userAgent
Window Screen
availHeight availWidth colorDepth height pixelDepth width



HTML DOM

HTML Documents
activeElement addEventListener() adoptNode() anchors applets baseURI body
charset characterSet close() cookie createAttribute() createComment()
createDocumentFragment() createElement() createEvent() createTextNode()
defaultView designMode doctype documentElement documentMode documentURI domain
domConfig embeds execCommand() forms getElementById() getElementsByClassName()
getElementsByName() getElementsByTagName() hasFocus() head images implementation
importNode() inputEncoding lastModified links normalize() normalizeDocument()
open() querySelector() querySelectorAll() readyState referrer
removeEventListener() renameNode() scripts strictErrorChecking title URL write()
writeln()
HTML Elements
accessKey addEventListener() appendChild() attributes blur() childElementCount
childNodes children classList className click() clientHeight clientLeft
clientTop clientWidth cloneNode() closest() compareDocumentPosition() contains()
contentEditable dir firstChild firstElementChild focus() getAttribute()
getAttributeNode() getBoundingClientRect() getElementsByClassName()
getElementsByTagName() hasAttribute() hasAttributes() hasChildNodes() id
innerHTML innerText insertAdjacentElement() insertAdjacentHTML()
insertAdjacentText() insertBefore() isContentEditable isDefaultNamespace()
isEqualNode() isSameNode() isSupported() lang lastChild lastElementChild
matches() namespaceURI nextSibling nextElementSibling nodeName nodeType
nodeValue normalize() offsetHeight offsetWidth offsetLeft offsetParent offsetTop
outerHTML outerText ownerDocument parentNode parentElement previousSibling
previousElementSibling querySelector() querySelectorAll() remove()
removeAttribute() removeAttributeNode() removeChild() removeEventListener()
replaceChild() scrollHeight scrollIntoView() scrollLeft scrollTop scrollWidth
setAttribute() setAttributeNode() style tabIndex tagName textContent title
HTML Attributes
getNamedItem() isId item() length name removeNamedItem() setNamedItem()
specified value
HTML Collection
item() length namedItem()
HTML NodeList
entries() forEach() item() keys() length values()
HTML DOMTokenList
add() contains() entries() forEach() item() keys() length remove() replace()
supports() toggle() value values()
HTML Styles
alignContent alignItems alignSelf animation animationDelay animationDirection
animationDuration animationFillMode animationIterationCount animationName
animationTimingFunction animationPlayState background backgroundAttachment
backgroundClip backgroundColor backgroundImage backgroundOrigin
backgroundPosition backgroundRepeat backgroundSize backfaceVisibility border
borderBottom borderBottomColor borderBottomLeftRadius borderBottomRightRadius
borderBottomStyle borderBottomWidth borderCollapse borderColor borderImage
borderImageOutset borderImageRepeat borderImageSlice borderImageSource
borderImageWidth borderLeft borderLeftColor borderLeftStyle borderLeftWidth
borderRadius borderRight borderRightColor borderRightStyle borderRightWidth
borderSpacing borderStyle borderTop borderTopColor borderTopLeftRadius
borderTopRightRadius borderTopStyle borderTopWidth borderWidth bottom boxShadow
boxSizing captionSide caretColor clear clip color columnCount columnFill
columnGap columnRule columnRuleColor columnRuleStyle columnRuleWidth columns
columnSpan columnWidth counterIncrement counterReset cssFloat cursor direction
display emptyCells filter flex flexBasis flexDirection flexFlow flexGrow
flexShrink flexWrap font fontFamily fontSize fontStyle fontVariant fontWeight
fontSizeAdjust height isolation justifyContent left letterSpacing lineHeight
listStyle listStyleImage listStylePosition listStyleType margin marginBottom
marginLeft marginRight marginTop maxHeight maxWidth minHeight minWidth objectFit
objectPosition opacity order orphans outline outlineColor outlineOffset
outlineStyle outlineWidth overflow overflowX overflowY padding paddingBottom
paddingLeft paddingRight paddingTop pageBreakAfter pageBreakBefore
pageBreakInside perspective perspectiveOrigin position quotes resize right
scrollBehavior tableLayout tabSize textAlign textAlignLast textDecoration
textDecorationColor textDecorationLine textDecorationStyle textIndent
textOverflow textShadow textTransform top transform transformOrigin
transformStyle transition transitionProperty transitionDuration
transitionTimingFunction transitionDelay unicodeBidi userSelect verticalAlign
visibility width wordBreak wordSpacing wordWrap widows zIndex



HTML EVENTS

HTML Events
abort afterprint animationend animationiteration animationstart beforeprint
beforeunload blur canplay canplaythrough change click contextmenu copy cut
dblclick drag dragend dragenter dragleave dragover dragstart drop durationchange
ended error focus focusin focusout fullscreenchange fullscreenerror hashchange
input invalid keydown keypress keyup load loadeddata loadedmetadata loadstart
message mousedown mouseenter mouseleave mousemove mouseover mouseout mouseup
offline online open pagehide pageshow paste pause play playing progress
ratechange resize reset scroll search seeked seeking select show stalled submit
suspend timeupdate toggle touchcancel touchend touchmove touchstart
transitionend unload volumechange waiting wheel
HTML Event Objects
Animation Events Clipboard Events Drag Events Events Focus Events HashChange
Events Input Events Keyboard Events Mouse Events PageTransition Events PopState
Events Progress Events Storage Events Touch Events Transition Events Ui Events
Wheel Events
HTML Event Properties
altKey (Mouse) altKey (Key) animationName bubbles button buttons cancelable
charCode clientX clientY code ctrlKey (Mouse) ctrlKey (Key) currentTarget data
defaultPrevented deltaX deltaY deltaZ deltaMode detail elapsedTime elapsedTime
eventPhase inputType isTrusted key keyCode location metaKey (Mouse) metaKey
(Key) newURL oldURL offsetX offsetY pageX pageY persisted propertyName
relatedTarget relatedTarget screenX screenY shiftKey (Mouse) shiftKey (Key)
target targetTouches timeStamp touches type which (Mouse) which (Key) view
HTML Event Methods
getModifierState() preventDefault() stopImmidiatePropagation() stopPropagation()



WEB APIS

API Canvas API Console API Fetch API Fullscreen
exitFullscreen() fullscreenElement fullscreenEnabled() requestFullscreen()
API Geolocation
coordinates getCurrentPosition() position
API History API MediaQueryList API Storage
clear() getItem() key() length removeItem() setItem()
API Validation API Web
crypto.getRandomNumber()



HTML OBJECTS

<a> <abbr> <address> <area> <article> <aside> <audio> <b> <base> <bdo>
<blockquote> <body> <br> <button> <canvas> <caption> <cite> <code> <col>
<colgroup> <datalist> <dd> <del> <details> <dfn> <dialog> <div> <dl> <dt> <em>
<embed> <fieldset> <figcaption> <figure> <footer> <form> <head> <header> <h1> -
<h6> <hr> <html> <i> <iframe> <img> <ins> <input> button <input> checkbox
<input> color <input> date <input> datetime <input> datetime-local <input> email
<input> file <input> hidden <input> image <input> month <input> number <input>
password <input> radio <input> range <input> reset <input> search <input> submit
<input> text <input> time <input> url <input> week <kbd> <label> <legend> <li>
<link> <map> <mark> <menu> <menuitem> <meta> <meter> <nav> <object> <ol>
<optgroup> <option> <output> <p> <param> <pre> <progress> <q> <s> <samp>
<script> <section> <select> <small> <source> <span> <strong> <style> <sub>
<summary> <sup> <table> <tbody> <td> <tfoot> <th> <thead> <tr> <textarea> <time>
<title> <track> <u> <ul> <var> <video>



OTHER REFERENCES

CSSStyleDeclaration
cssText getPropertyPriority() getPropertyValue() item() length parentRule
removeProperty() setProperty()
JS Conversion





JAVASCRIPT STRING REPLACE()

❮ Previous JavaScript String Reference Next ❯


EXAMPLES

Replace Microsoft:

let text = "Visit Microsoft!";
let result = text.replace("Microsoft", "W3Schools");
Try it Yourself »

A global replacement:

let text = "Mr Blue has a blue house and a blue car";
let result = text.replace(/blue/g, "red");
Try it Yourself »

More examples below.

--------------------------------------------------------------------------------


DESCRIPTION

The replace() method searches a string for a value or a regular expression.

The replace() method returns a new string with the value(s) replaced.

The replace() method does not change the original string.

--------------------------------------------------------------------------------


NOTE

If you replace a value, only the first instance will be replaced. To replace all
instances, use a regular expression with the g modifier set.

Read more about regular expressions in our:

 * RegExp Tutorial
 * RegExp Reference


SEE ALSO:

The replaceAll() Method - replaces all matches

--------------------------------------------------------------------------------


SYNTAX

string.replace(searchValue, newValue)


PARAMETERS

Parameter Description searchValue Required.
The value, or regular expression, to search for. newValue Required.
The new value (to replace with).


RETURN VALUE

Type Description A stringA new string where the specified value(s) has been
replaced.

--------------------------------------------------------------------------------

ADVERTISEMENT


--------------------------------------------------------------------------------


MORE EXAMPLES

A global, case-insensitive replacement:

let text = "Mr Blue has a blue house and a blue car";
let result = text.replace(/blue/gi, "red");
Try it Yourself »

A function to return the replacement text:

let text = "Mr Blue has a blue house and a blue car";
let result = text.replace(/blue|house|car/gi, function (x) {
  return x.toUpperCase();
});
Try it Yourself »


RELATED PAGES

JavaScript Strings

JavaScript String Methods

JavaScript String Search

--------------------------------------------------------------------------------


BROWSER SUPPORT

replace() is an ECMAScript1 (ES1) feature.

ES1 (JavaScript 1997) is fully supported in all browsers:

Chrome Edge Firefox Safari Opera IE Yes Yes Yes Yes Yes Yes

--------------------------------------------------------------------------------

❮ Previous JavaScript String Reference Next ❯
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