JavaScript Countdown

標題：JS Countdown
HTML (index.html)：

<span id='clock'></span>
<script type="text/javascript">
var reciprocalboxy = new function() {
    return {
        endDay : new Date("2030/1/1 00:00:00"),
        show : function() {
            var today = new Date();
            var timeRemain = this.endDay - today;
            var D = parseInt(timeRemain/1000/60/60/24);
            var h = parseInt((timeRemain/1000/60/60)%24);
            var m = parseInt((timeRemain/1000/60)%60);
            var s = parseInt((timeRemain/1000)%60);
            document.getElementById('clock').innerHTML = 
            D + "日" + h + "點" + m + "分" + s + "秒";
        },
        init : function() {
            this.show();
            window.setInterval(function() {
                reciprocalboxy.show();
            }, 1000);
        }
    };
};
reciprocalboxy.init();
</script>

範例：


說明：
簡易倒數計時器範例。