jquery实现手机验证码发送倒计时60s

原创 Dale111 随笔 jquery 713阅读 2017-06-09 10:23:14 举报

<!DOCTYPE html>
<html>
<head>
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script>;
<script type="text/javascript">
var countdown=60;
function settime(obj) {
if (countdown == 0) {
obj.removeAttribute("disabled");
obj.value="免费获取验证码";
countdown = 60;
return;
} else {
obj.setAttribute("disabled", true);
obj.value="重新发送(" + countdown + ")";
countdown--;
}
setTimeout(function() {
settime(obj) }
,1000)
}

</script>
<body>
<input type="button" id="btn" value="免费获取验证码" onclick="settime(this)" />

</body>
</html>

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