<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>
<body>
<span >请等待!!</span>
<span id="second" >3</span>
<!-- 跳转-->
<script type="text/javascript">
var num = document.getElementById("second").innerHTML;
//获取显示秒数的元素,通过定时器来更改秒数。
function count()
{
num--;
document.getElementById("second").innerHTML=num;
if(num==0)
{
location.assign("tiaozhuan.php");
}
}
setInterval("count()",1000);
//通过window的location和history对象来控制网页的跳转。
function back()
{
window.history.back();
}
</script>
</body>
</html>