<html>
<head>
<script src="https://libs.baidu.com/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("button").click(function(){
$("#w3s").attr({
"href" : "/jquery",
"title" : "ZiQiangXueTang jQuery Tutorial"
});
});
});
</script>
</head>
<body>
<p><a href="/" id="w3s">ziqiangxuetang.com</a></p>
<button>Change href and title</button>
<p>Mouse over the link to see that the href attribute has changed and a title attribute is set.</p>
</body>
</html>