日期格式转换字符串格式

1、new Date()格式转  字符串格式

Fri Jan 01 2010 00:00:00 GMT+0800 (中国标准时间)

转成：

2010-01-01 00:00:00

js代码函数：

value是Mon May 06 2019 04:05:00 GMT+0800 (中国标准时间)

getNowFormatDate(value){
      var CurrentDate = "";
      var Year  = value.getFullYear();
      var Month = value.getMonth()+1;
      var Day = value.getDate();
      var Hours = value.getHours();
      var Minutes = value.getMinutes();
      var MonthVal = (Month >= 10)?Month:'0'+Month;
      var DayVal = (Day >= 10)?Day:'0'+Day;
      var HoursVal = (Hours >= 10)?Hours:'0'+Hours;
      var MinutesVal = (Minutes >= 10)?Minutes:'0'+Minutes;
      CurrentDate = Year +'-'+MonthVal+'-'+DayVal+' '+HoursVal+':'+MinutesVal+':00';
      return CurrentDate;
},

　　

2、 比较两个时间大小

/*
    比较两个字符串，比较的是转换之后的:
    self.dateCompare("2019-03-01 05:23","2019-03-01 02:34")
*/
dateCompare(startString, endString){
    var startTimeString = new Date(startString); 
    var endTimeString = new Date(endString); 
    var startTime = startTimeString.getTime();
    var endTime = endTimeString.getTime();
    if(endTime > startTime){
         // return '开始 < 结束';
            return 1;
     }else if(startTime == endTime){
           //return '相等';
             return 0;
      }else{
           //return '开始 > 结束';
             return  -1
      }
},