Date.prototype.format = function(fmt) {
	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;
}

// import time from "@/common/time.js"

// console.log(new Date().format("yyyy-MM-dd"))


export const getNextDate = (date, day)=> {
	var dd = new Date(date);
	dd.setDate(dd.getDate() + day);
	var y = dd.getFullYear();
	var m = dd.getMonth() + 1 < 10 ? "0" + (dd.getMonth() + 1) : dd.getMonth() + 1;
	var d = dd.getDate() < 10 ? "0" + dd.getDate() : dd.getDate();
	return y + "-" + m + "-" + d;
}

// getNextDate("2018-09-27",10)


// 计算两个日期时间差，天 小时 分 秒格式
export const diffTime = (startDate,endDate)=> { 
    startDate= new Date(startDate);
    endDate = new Date(endDate);
    var diff=endDate.getTime() - startDate.getTime();//时间差的毫秒数 
   
    //计算出相差天数 
    var days=Math.floor(diff/(24*3600*1000)); 
        
    //计算出小时数 
    var leave1=diff%(24*3600*1000);    //计算天数后剩余的毫秒数 
    var hours=Math.floor(leave1/(3600*1000)); 
    //计算相差分钟数 
    var leave2=leave1%(3600*1000);        //计算小时数后剩余的毫秒数 
    var minutes=Math.floor(leave2/(60*1000)); 
        
    //计算相差秒数 
    var leave3=leave2%(60*1000);      //计算分钟数后剩余的毫秒数 
    var seconds=Math.round(leave3/1000); 
       
    // var returnStr = seconds + "秒"; 
    // if(minutes>0) { 
    //     returnStr = minutes + "分" + returnStr; 
    // } 
    // if(hours>0) { 
    //     returnStr = hours + "小时" + returnStr; 
    // } 
    // if(days>0) { 
    //     returnStr = days + "天" + returnStr; 
    // } 
    // return returnStr; 
	
	var returnStr = seconds + " ";
	if(minutes >= 0) { 
	    returnStr = minutes + " " + returnStr; 
	} 
	if(hours >= 0) { 
	    returnStr = hours + " " + returnStr; 
	} 
	if(days >= 0) { 
	    returnStr = days + " " + returnStr; 
	} 
	return returnStr; 
}     

// var diffTimeShow = diffTime('2017-03-02 09:10','2017-03-17 04:10');