JS把Date轉化為指定格式的String（Format）
<script type="text/javascript">
Date.prototype.Format = function(fmt) {
var o = {
"M+": this.getMonth() + 1,
"d+": this.getDate(),
"H+": this.getHours(),
"m+": this.getMinutes(),
"s+": this.getSeconds(),
"q+": Math.floor((this.getMonth() + 3) / 3),
"S": this.getMilliseconds()
};
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;
}
</script>
new Date().Format("yyyy-MM-dd HH:mm:ss");