<!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(){
        $("#w3s").attr("href", "http://www.w3schools.com/jquery");
    });
});
</script>
</head>
<body>

<p><a href="http://www.w3schools.com" id="w3s">W3Schools.com</a></p>

<button>Change href Value</button>

<p>Mouse over the link (or click on it) to see that the value of the href attribute has changed.</p>

&nbsp;

&nbsp;
<h2>উপরোক্ত প্রোগ্রাম এর 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(){
        $("#w3s").attr("href", "http://www.w3schools.com/jquery");
    });
});
&lt;/script&gt;
&lt;/head&gt;
&lt;body&gt;

&lt;p&gt;&lt;a href="http://www.w3schools.com" id="w3s"&gt;W3Schools.com&lt;/a&gt;&lt;/p&gt;

&lt;button&gt;Change href Value&lt;/button&gt;

&lt;p&gt;Mouse over the link (or click on it) to see that the value of the href attribute has changed.&lt;/p&gt;

&lt;/body&gt;
&lt;/html&gt;</pre>

<hr />

&nbsp;

&nbsp;

</body>
</html>