倒计时60秒发送短信 

 1 <!DOCTYPE html>
 2 <html>
 3 <head>
 4     <meta charset="utf-8">
 5     <title>jQuery实现倒计时</title>
 6 <body>
 7 <input type="button" id="btn" value="免费获取验证码" onclick="sendemail()" />
 8 
 9 <script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script>
10 <script type="text/javascript">
11     var countdown=60;
12     function sendemail(){
13         var obj = $("#btn");
14         settime(obj);
15 
16     }
17     function settime(obj) { //发送验证码倒计时
18         if (countdown == 0) {
19             obj.attr('disabled',false);
20             obj.val("免费获取验证码");
21             countdown = 60;
22             return;
23         } else {
24             obj.attr('disabled',true);
25             obj.val("重新发送(" + countdown + ")");
26             countdown--;
27         }
28         setTimeout(function() {
29                 settime(obj) }
30             ,1000)
31     }
32 </script>
33 </body>
34 </html>

 

posted @ 2022-07-25 23:42  bosomer  阅读(41)  评论(0)    收藏  举报