<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title></title> <script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script> <script type="text/javascript"> var times = 10; var setIntervalId; $(function () { $("#btnOk").attr("disabled", true); setIntervalId = setInterval("countTimes()", 1000); }); function countTimes() { if (times == 0) { $("#btnOk").attr("disabled", false); $("#btnOk").val("同意"); clearInterval(setIntervalId); return; } else { $("#btnOk").val("请仔细阅读条款" + times + "秒"); times--; } } </script> </head> <body> <textarea> sdfsdfsdfihoserfidfvg </textarea> <input type="button" value="同意" id="btnOk" /> </body> </html>