在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="https://apps.bdimg.com/libs/jquerymobile/1.4.2/jquery.mobile.min.css">
<script src="https://apps.bdimg.com/libs/jquery/1.10.2/jquery.min.js"></script>
<script src="https://apps.bdimg.com/libs/jquerymobile/1.4.2/jquery.mobile.min.js"></script>
<script>
$(document).on("pageloadfailed",function(event,data){
  alert("Sorry, requested page does not exist.");
});
</script>
</head>
<body>

<div data-role="page">
  <div data-role="header">
    <h1>Header Text</h1>
  </div>

  <div data-role="content">
    <a href="externalnotexist.html">External page that does not exist</a>
  </div>

  <div data-role="footer">
    <h1>Footer Text</h1>
  </div>
</div> 

</body>
</html>
源代码

动行结果
