<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Count</title> </head> <body> <div style="text-align: center " >Enter baidu in <span id="totalSecond" style="text-align: center ;font-family: GulimChe;font-size: 100px;">5 </span>seconds </div> <script language="javascript" type="text/javascript"> var second = document.getElementById(‘totalSecond‘).textContent; if (navigator.appName.indexOf("Explorer") > -1) { second = document.getElementById(‘totalSecond‘).innerText; } else { second = document.getElementById(‘totalSecond‘).textContent; } setInterval("redirect()", 1000); function redirect() { if (second < 0) { location.href = ‘www.baidu.com‘; //go to baidu } else { if (navigator.appName.indexOf("Explorer") > -1) { document.getElementById(‘totalSecond‘).innerText = second--; } else { document.getElementById(‘totalSecond‘).textContent = second--; } } } </script> </body> </html>
原文：http://www.cnblogs.com/batter152/p/3530701.html