【转】jQuery实现发送短信验证码后60秒倒计时
1 2 <!DOCTYPE html> 3 <html> 4 <head> 5 <script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script> 6 <script type="text/javascript"> 7 var countdown=60; 8 function settime(obj) { 9 if (countdown == 0) { 10 obj.removeAttribute("disabled"); 11 obj.value="免费获取验证码"; 12 countdown = 60; 13 return; 14 } else { 15 obj.setAttribute("disabled", true); 16 obj.value="重新发送(" + countdown + ")"; 17 countdown--; 18 } 19 setTimeout(function() { 20 settime(obj) } 21 ,1000) 22 } 23 24 </script> 25 <body> 26 <input type="button" id="btn" value="免费获取验证码" onclick="settime(this)" /> 27 28 </body> 29 </html>
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原文：http://www.open-open.com/code/view/1432601256051
