Long型时间轴时间类型转为正常格式时间

 /** 转换时间start **/
	Date.prototype.format = function (format) {  
	    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(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;  
	}  

	function getFormatDateByLong(l, pattern) {  
	    return getFormatDate(new Date(l), pattern);  
	} 
	function getSmpFormatDate(date) {  
	    var pattern = "";  
	     pattern = "yyyy-MM-dd hh:mm:ss";  
	    return getFormatDate(date, pattern);  
	}  
	function getFormatDate(date, pattern) {  
	    if (date == undefined) {  
	        date = new Date();  
	    }  
	    if (pattern == undefined) {  
	        pattern = "yyyy-MM-dd hh:mm:ss";  
	    }  
	    return date.format(pattern);  
	} 
	/** 转换时间end **/

getFormatDateByLong(createtime);