wynnzen/wait_sec_and_back.html

## wait_sec_and_back.html
<!DOCTYPE html>
<html>
 <head>
  <title>浏览器对象</title>
  <meta http-equiv="Content-Type" content="text/html; charset=gkb"/>
 </head>
 <body>
  <!--先编写好网页布局-->
   <h3>操作成功</h3>
  <span id="sec">5</span>秒后回到主页
  <button onclick="goback();">返回 </button>


  <script type="text/javascript">

  var sec = document.getElementById("sec");
 var time = 5;
 var t = window.setInterval(function(){
     if(time<1){
     	clearInterval(t);
 		window.location = "http://baidu.com";
 		return;
 	}
     sec.innerHTML = time;
     time--;

     },1000);
   //通过window的location和history对象来控制网页的跳转。
   function goback(){
   	window.history.back();
   }

 </script>
</body>
</html>
	<!DOCTYPE html>
	<html>
	<head>
	<title>浏览器对象</title>
	<meta http-equiv="Content-Type" content="text/html; charset=gkb"/>
	</head>
	<body>
	<!--先编写好网页布局-->
	<h3>操作成功</h3>
	<span id="sec">5</span>秒后回到主页
	<button onclick="goback();">返回 </button>


	<script type="text/javascript">

	var sec = document.getElementById("sec");
	var time = 5;
	var t = window.setInterval(function(){
	if(time<1){
	clearInterval(t);
	window.location = "http://baidu.com";
	return;
	}
	sec.innerHTML = time;
	time--;

	},1000);
	//通过window的location和history对象来控制网页的跳转。
	function goback(){
	window.history.back();
	}

	</script>
	</body>
	</html>