js-倒计时

[javascript]代码库

var CountDown = {
            intDiff: 10
        }
        function fnUpdateTime() {
            $("#last_time").text(--CountDown.intDiff);
            if (CountDown.intDiff!=0) {
                setTimeout("fnUpdateTime()", 1000)
            } else {
                alert(78);
            }
        }
        $(function () {
            setTimeout("fnUpdateTime()", 1000)
        });