Js转换long型时间

/**
	 * js转换long型时间
	 * new Date(long型时间戳).Format("yyyy-MM-dd hh:mm")
	 * new Date(long型时间戳).Format("yyyy-MM-dd hh:mm:ss")
	 * **/
	Date.prototype.Format = function(format) {
	    var o = {
	        "M+": this.getMonth() + 1, //month  
	        "d+": this.getDate(), //day  
	        "h+": this.getHours(), //hour  
	        "m+": this.getMinutes(), //minute  
	        "s+": this.getSeconds(), //second  
	        "q+": Math.floor((this.getMonth() + 3) / 3), //quarter  
	        "S": this.getMilliseconds() //millisecond  
	    }
	    if (/(y+)/.test(format)) format = format.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
	    for (var k in o)
	        if (new RegExp("(" + k + ")").test(format)) format = format.replace(RegExp.$1, RegExp.$1.length == 1 ? o[k] : ("00" + o[k]).substr(("" + o[k]).length));
	    return format;
	}