jquery setTimeout()几秒钟后跳转网页

<script type="text/javascript">  
  $(document).ready(function () {  
   //$("#submitbtn").click(function(){  
		setTimeout(function(){//两秒后跳转
			 alert("恭喜你注册成功，两秒后跳转。"); 
			 //location.href = "index.php";//PC网页式跳转
				$.mobile.changePage("index.php"); //手机网页式跳转
				},2000);
          // });  
   });
</script>