jquery 60s倒计时

前端开发中经常用到的发送按钮倒计时，每次都是重写，挺麻烦的，记录一下，以后直接来复制代码

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="content-type" content="text/html; charset=UTF-8">
        <meta content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=no" id="viewport" name="viewport">
        <title>60s倒计时</title>
        <script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script>
    </head>
    <body>
        <input type="button" value="邮箱验证码" onclick="sendVerificationCode(this)" />
            
        <script type="text/javascript">
            //发送验证码按钮的60s倒计时
            var countdown = 60;
            function sendVerificationCode(obj) {
                if(countdown == 0) {
                    obj.removeAttribute("disabled");
                    obj.value = "重新获取";
                    countdown = 60;
                    return;
                } else {
                    obj.setAttribute("disabled", true);
                    obj.value = "重新(" + countdown + ")";
                    countdown--;
                }
                setTimeout(function() {
                    sendVerificationCode(obj)
                }, 1000)
            }
        </script>
    </body>
</html>

 

posted @ 2018-07-13 10:32  青青子衿619  阅读(539)  评论(0)  编辑  收藏  举报