Step 1: Create Index.php file and implement below html code:
<img id="dummyimage" src="http://dummyimage.com/450x255/" alt="" /> <button class="btn btn-info" id="changeSize">Change Size</button>
<script type="text/javascript">
// Stockphotos JS
$(document).ready(function(){
var flag = 0;
$("button#changeSize").click(function(){
if(flag == 0) {
$("#dummyimage").attr("src","http://dummyimage.com/250x155/");
flag = 1;
}
else if(flag == 1) {
$("#dummyimage").attr("src","http://dummyimage.com/450x255/");
flag = 0;
}
});
});
</script>
<html>
<head>
<title>How To Change Div Size On Click Of Button Using JQuery</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
</head>
<style>
body {
background: black;
}
</style>
<body>
<div class="container">
<br><br><br>
<div class="text-center">
<h1 id="color" style="color: White;">Change Div Size On Click Of Button Using JQuery</h1>
</div>
<br>
<div class="col-md-12">
<div class="well">
<img id="dummyimage" src="http://dummyimage.com/450x255/" alt="" />
<button class="btn btn-info" id="changeSize">Change Size</button>
</div>
</div>
<br>
</div>
</body>
</html>
<script type="text/javascript">
// Stockphotos JS
$(document).ready(function(){
var flag = 0;
$("button#changeSize").click(function(){
if(flag == 0) {
$("#dummyimage").attr("src","http://dummyimage.com/250x155/");
flag = 1;
}
else if(flag == 1) {
$("#dummyimage").attr("src","http://dummyimage.com/450x255/");
flag = 0;
}
});
});
</script>