在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<head>
<script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
  $("a").click(function(event){
    event.preventDefault();
  });
});
</script>
</head>
<body>

<a href="http://w3cschool.cc/">Go to W3Cschool.cc</a>
<p>The preventDefault() method will prevent the link above from following the URL.</p>

</body>
</html>

源代码

动行结果