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jquery防刷新发送验证码倒计时

  • 3822人已阅读
  • 时间：2018-10-16 09:00:48
  • 分类：jQuery
  • 作者：祥哥
<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <title>Examples</title>
    <meta name="description" content="">
    <meta name="keywords" content="">
    <script src="http://apps.bdimg.com/libs/jquery/1.11.1/jquery.min.js"></script>
    <script src="jquery.cookie.js"></script>
    <style type="text/css">
    * {
        margin: 0;
        padding: 0;
        font-family: "Microsoft Yahei";
    }
    
    .captcha-box {
        width: 360px;
        height: 34px;
        margin: 30px;
        padding: 30px;
        border: #956E6F 1px dashed;
        border-radius: 5px;
        background-color: #FAF2F2;
    }
    
    #mobile {
        float: left;
        width: 180px;
        height: 32px;
        border: #e5e5e5 1px solid;
        line-height: 32px;
        text-indent: 8px;
        outline: none;
    }
    
    #getting {
        float: left;
        height: 34px;
        margin-left: -1px;
        padding: 0 18px;
        text-align: center;
        line-height: 34px;
        border: #e5e5e5 1px solid;
        background: linear-gradient(0deg, #f4f2f2 0%, #fbf9f9 100%);
        cursor: pointer;
        outline: none;
    }
    </style>
    <script>
    $(function() {
        /*仿刷新：检测是否存在cookie*/
        if ($.cookie("captcha")) {
            var count = $.cookie("captcha");
            var btn = $('#getting');
            btn.val(count + '秒后可重新获取').attr('disabled', true).css('cursor', 'not-allowed');
            var resend = setInterval(function() {
                count--;
                if (count > 0) {
                    btn.val(count + '秒后可重新获取').attr('disabled', true).css('cursor', 'not-allowed');
                    $.cookie("captcha", count, {
                        path: '/',
                        expires: (1 / 86400) * count
                    });
                } else {
                    clearInterval(resend);
                    btn.val("获取验证码").removeClass('disabled').removeAttr('disabled style');
                }
            }, 1000);
        }
        /*点击改变按钮状态，已经简略掉ajax发送短信验证的代码*/
        $('#getting').click(function() {
            var btn = $(this);
            var count = 60;
            var resend = setInterval(function() {
                count--;
                if (count > 0) {
                    btn.val(count + "秒后可重新获取");
                    $.cookie("captcha", count, {
                        path: '/',
                        expires: (1 / 86400) * count
                    });
                } else {
                    clearInterval(resend);
                    btn.val("获取验证码").removeAttr('disabled style');
                }
            }, 1000);
            btn.attr('disabled', true).css('cursor', 'not-allowed');
        });
    });
    </script>
</head>
<body>
    <div class="captcha-box">
        <input type="text" id="mobile" maxlength="11" placeholder="请输入手机号码">
        <input type="button" id="getting" value="获取验证码">
    </div>
</body>
</html>

 

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