获取手机验证码倒计时那些事

 获取手机验证码倒计时

<!DOCTYPE html>
<html>

    <head>
        <meta charset="utf-8">
        <title>获取验证码</title>
        <meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
    
    </head>

    <body>
        <input type="button" id="btn" value="获取验证码" />
        <script type="text/javascript">
            var wait = 60;
            function time(o) {
                if(wait == 0) {
                    o.removeAttribute("disabled");
                    o.value = "重新获取验证码";
                    wait = 60;
                } else {
                    o.setAttribute("disabled", true);
                    o.value = "重新发送(" + wait + ")";
                    wait--;
                    setTimeout(function() {
                        time(o)
                    },1000);
                }
            }
            document.getElementById("btn").onclick = function() {
                time(this);
            }
        </script>
    </body>

</html>

 

posted @ 2018-06-13 00:08  枫林晚忆  阅读(212)  评论(0)  编辑  收藏  举报