<!DOCTYPE html>
<html>
<head>
<title>浏览器对象</title>
<meta http-equiv="Content-Type" content="text/html; charset=gkb"/>
</head>
<body>
<h1>操作成功</h1>
<span id="first">5</span><span>秒后返回到主页</span>
<a href="javascript:back();">返回</a>
<script type="text/javascript">
var num=document.getElementById("first").innerHTML;
function con(){
num--;
document.getElementById("first").innerHTML=num;
if(num==0){
location.assign("www.imooc.com");
}
}
setInterval("con()",1000);
function back()
{
window.history.back();
}
</script>
</body>
</html>
刚毅87