js
<script language="javascript"> <!-- var wait_time = 8; //设置秒数(单位秒) var secs_time = 0; for(var i=1;i<=wait_time;i++) { window.setTimeout("sTimer("+i+")",i*1000); } function sTimer(num) { if(num==wait_time) { document.getElementById("reg_btn").value=" 同意注册 "; document.getElementById("reg_btn").disabled=false; } else { secs_time=wait_time-num; document.getElementById("reg_btn").value="请先阅读服务条款 ("+secs_time+")"; } } //--> </script>
html
<div style="350px; text-align:center;"> <form name="regForm" method="post" action=""> <input type="submit" value="请先阅读服务条款 (0)" disabled="disabled" id="reg_btn"> <input id="BtnClose" type="button" value=" 我不同意 " onclick="window.close();"> </form> </div>