<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script>
$(document).ready(function(){
    $("button").click(function(){
        $("#div1").width(500).height(500);
    });
});
</script>
<style>
#div1 {
    height: 100px;
    width: 300px;
    padding: 10px;
    margin: 3px;
    border: 1px solid blue;
    background-color: lightblue;
}
</style>
</head>
<body>

<div id="div1"></div>
<br>

<button>Resize div</button>

&nbsp;

&nbsp;
<h2>এর জন্য কোড নিম্নে দেয়া হলো:</h2>

<hr />

<pre>&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
&lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"&gt;&lt;/script&gt;
&lt;script&gt;
$(document).ready(function(){
    $("button").click(function(){
        $("#div1").width(500).height(500);
    });
});
&lt;/script&gt;
&lt;style&gt;
#div1 {
    height: 100px;
    width: 300px;
    padding: 10px;
    margin: 3px;
    border: 1px solid blue;
    background-color: lightblue;
}
&lt;/style&gt;
&lt;/head&gt;
&lt;body&gt;

&lt;div id="div1"&gt;&lt;/div&gt;
&lt;br&gt;

&lt;button&gt;Resize div&lt;/button&gt;

&lt;/body&gt;
&lt;/html&gt;</pre>

<hr />

&nbsp;

&nbsp;

</body>
</html>