<!DOCTYPE html><html>?<head>? <title>瀏覽器對象</title>? ? <meta http-equiv="Content-Type" content="text/html; charset=gkb"/>?? ?</head>?<body>? <!--先編寫好網頁布局-->? <H4>操作成功</H4>? <p><span id="id">5</span>秒后回到主頁<a href="#" onclick="set()">返回</a><p>? ?? <script type="text/javascript">? ??? //獲取顯示秒數的元素，通過定時器來更改秒數。var da=document.getElementById("id").innerHTML;function set(){??? if(da>0){??????? document.getElementById("id").innerHTML=--da;??????? setInterval(set,1000);??????? }else{??????????? window.location.assign("http://www.baidu.com");??????? }??? }setInterval(set,1000);?? //通過window的location和history對象來控制網頁的跳轉。?? ?</script> </body></html>
為什么這樣寫第三秒不會顯示
慕田峪5648110
2016-09-02 00:29:14
