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[jQuery编程挑战]006 生成一个倒计时效果

<!DOCTYPE html>
<html lang="zh">
    <head>
        <meta charset="utf-8"/>
        <title>生成一个倒计时效果</title>
        <style type="text/css">
            body{
                margin:0;
                padding:0;
                background: orange;
                width: 100%;
                height: 100%;
                font-size: 5em;
                color: #fff;
                text-align:center;
                font-family: 'microsoft yahei',Arial,sans-serif;
            }
            .countdown{
                position: absolute;
                top:50%;
                left:50%;
                transform: translate(-50%,-50%);
                -webkit-transform: translate(-50%,-50%);
            }
        </style>
        <script type="text/javascript" src="../js/jquery-1.11.0.js"></script>
        <script type="text/javascript">
            $(function() {
                var $countdown = $('.countdown'),
                        number = $countdown.html() * 100 / 100;
                    //number = parseInt($countdown.html());
                var countdownInterval = window.setInterval(function() {
                    number--;
                    if (number == 0) {
                        $countdown.html("你好，涂传龙");    
                        window.clearInterval(countdownInterval);
                    } else {
                        $countdown.html(number);
                    }
                }, 1000);
            });
        </script>
    </head>
    <body>
        <div class="countdown">
            60
        </div>
    </body>
</html>

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原文地址：https://www.cnblogs.com/jerry19890622/p/4309891.html