本文实例讲述了js实现的倒计时按钮。分享给大家供大家参考。具体分析如下：
效果图如下：
具体代码如下：
<span xss=removed>
<input type="button" value="确定"id="rulesubmit" />
[removed]
var secs = 3;
var wait = secs * 1000;
var update = function(num,value){
if (num == (wait/1000)){
$("#rulesubmit").val("免费获
