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BECOME AN EXPERT PROGRAMMER THROUGH INTERACTIVE EXAMPLES

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JavaScript – Featured Example
How to Rotate an Image using JavaScript

Rotate image







<div id="div1">
  <img id="image1" src="https://theprogrammingexpert.com/wp-content/uploads/example-img1.png">
  <div id="click-me" onclick="rotateImage()">Rotate image</div>
</div>

<script>

var rotateDegrees = 0;  
function rotateImage(){
  rotateDegrees += 30;
  document.getElementById("image1").style.transform = "rotate(" + rotateDegrees + "deg)";
};

</script>


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jQuery – Featured Example
Example of Using the jQuery clone() Method
Clone box






<style>.box{ float: left; width: 50px; height: 50px; background: #7bbfa2; margin-right: 10px; margin-bottom: 10px; }</style>
<div id="div2">
  <div class="box"></div>
</div><div class="clear"></div>
<div id="click-me2" class="click-me">Clone box</div>

<script>
$("#click-me2").click(function(){
  var clonedP = $(".box:first").clone();
  var randomColor = "#" + (Math.floor(Math.random()*16777215).toString(16));
  clonedP.css("background",randomColor)
  clonedP.appendTo("#div2");
});
</script>


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Python – Featured Example
Reverse String with Recursion in Python

string = "Hello"

def reverse_string(string):
    if len(string) == 1:
        return string
    return reverse_string(string[1:]) + string[0:1]

print(reverse_string(string))

#Output:
olleH

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PHP – Featured Example
How to Check If String Contains Substring in PHP

$string = "I love to program!";
$substring = "program";

$result = str_contains($string,$substring)   /* $result = true */

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HTML – Featured Example
HTML Scrollable Div with Dynamic Content
This is a scrollable div

Keep clicking the button below to add enough divs to show the scrollbar.

Add text






<style>#div5 { height: 100px; width:300px; overflow-y: auto; border: 1px solid #444; padding: 5px; }</style>
<div id="div5">
  <div id="div6">This is a scrollable div</div>
</div>
<p>Keep clicking the button below to add enough divs to show the scrollbar.</p>
<div id="click-me">Add text</div>

<script>

$("#click-me").click(function(){
  $('<div class="new-div">This is a scrollable div</div>').appendTo("#div5");
});

</script>



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SAS – Featured Example
Generating Random Integers in a Range Using SAS

data k;
    a = 0;
    b = 10;
    do i = 1 to 10;
        rand_int = rand("integer",0,10);
        output;
    end;
run;

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VBA – Featured Example
VBA e – Using Exp() Function to Get Euler’s Constant e

Debug.Print Exp(1); 

'Output:
2.718281828459045

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LEARN HOW TO PROGRAM IN MULTIPLE LANGUAGES

Check out our recent programming articles below.


PYTHON

 * How to Check if Variable Exists in Python
 * Python cosh – Find Hyperbolic Cosine of Number Using math.cosh()
 * Python Check if Float is a Whole Number
 * Touch File Python – How to Touch a File Using Python
 * Check if String is Date in Python


JAVASCRIPT

 * Subtract All Numbers in an Array Using JavaScript
 * Using JavaScript to Remove the First Character From a String
 * Examples Using the JavaScript += Addition Assignment Operator
 * JavaScript atanh – Find Hyperbolic Arctangent of Number
 * Using JavaScript to Get the Height of an Element


JQUERY

 * jQuery insertBefore – Insert Element Before Another Element
 * jQuery clone – Making a Copy of an Element
 * How to Use jQuery to Animate the Font Size of a Paragraph
 * Using jQuery to Add a Sibling to an Element
 * Using jQuery to Change the Font Size of a Paragraph


PHP

 * php array_combine() – Create New Array Given Arrays of Keys and Values
 * php sinh – Find Hyperbolic Sine of Number Using php sinh() Function
 * Get First Element of Array in php
 * PHP Variables Are Preceded by $
 * Remove First Character from String Using php


HTML

 * What is the Correct HTML for Making a Text Input Field?
 * How to Make an HTML List Without Bullets
 * How to Make a Div Scrollable in HTML
 * What Type of HTML List will Automatically Place a Number in Front of the
   Items?
 * How to Call a JavaScript Function From HTML


SAS

 * SAS right() Function – Right Align Character Variables in Data Step
 * SAS trim – Remove All Trailing Blanks from String Variable in Data Step
 * SAS calculated – Use Columns Created from Select in PROC SQL
 * Round Number to Nearest Integer in SAS
 * SAS month function – Get Month from Date Variable




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