javascript Date Format 函数

<html>
<head>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
	<title>DateFormat</title>
	<script type="text/javascript">
        Date.prototype.Format = function (fmt) { //author: meizz
            var o = {
                "M+": this.getMonth() + 1, //月份
                "d+": this.getDate(), //日
                "h+": this.getHours(), //小时
                "m+": this.getMinutes(), //分
                "s+": this.getSeconds(), //秒
                "q+": Math.floor((this.getMonth() + 3) / 3), //季度
                "S": this.getMilliseconds() //毫秒
            };
            if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
            for (var k in o)
                if (new RegExp("(" + k + ")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
            return fmt;
        };

        alert(new Date().Format("yyyy-MM-dd"))

	</script>
</head>
<body>

</body>
</html>

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