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下面對使用JavaScript實現頁面定時跳轉（也稱倒計時跳轉）做一下總結，各種定時跳轉代碼記錄如下：
（1）使用 setTimeout 函數實現定時跳轉（如下代碼要寫在body地區內）
複製代碼 代碼如下:
<script type="text/javascript">
// 3秒鐘之後跳轉到指定的頁面
setTimeout(window.location.href = "http://3aj.cn/javascript/19.html", 3);
</script>
（2）html代碼實現，在頁面的head地區塊內加上如下代碼
複製代碼 代碼如下:
<!-- 5秒鐘後跳轉到指定的頁面 -->
<meta http-equiv="refresh" content="5;url=http://3aj.cn/javascript/19.html" />
（3）稍微複雜點，多見於登陸之後的定時跳轉
複製代碼 代碼如下:
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>js定時跳轉頁面的方法</title>
</head>
<body>
<script type="text/javascript">
var t = 10; // 設定跳轉的時間
setInterval("refer()", 1000); // 啟動1秒定時
function refer(){
if (t == 0) {
location = "http://3aj.cn/javascript/19.html"; // 設定跳轉的連結地址
}
document.getElementById('show').innerHTML = "" + t + "秒後跳轉到php程式員教程網"; // 顯示倒計時
t--; // 計數器遞減
}
</script>
<span id="show"></span>
</body>
</html>
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