Nodejs/javaScripは、年間、月、日、時、秒を含む時間差関数を取得します.

**       （        、  、  、   ）**
//                   "2018-09-09 00:00:00"
var Datetemp1=new Date();
var timesNow='';
timesNow=Datetemp1.getFullYear() + "-" + (Datetemp1.getMonth() + 1) + "-" + Datetemp1.getDate() + " " + Datetemp1.getHours() + ":" + Datetemp1.getMinutes() + ":" + Datetemp1.getSeconds()
//       （        、  、  、   ）
function GetDateDiff(startTime, endTime, diffType) {
    // xxxx-xx-xx     ，    xxxx    
    startTime = startTime.replace(/\-/g, "/");
    endTime = endTime.replace(/\-/g, "/");
    //              
    diffType = diffType.toLowerCase();
    var sTime = new Date(startTime);      //    
    var eTime = new Date(endTime);  //    
    //       
    var divNum = 1;
    switch (diffType) {
        case "misecond":
            divNum = 1;
            break;
        case "second":
            divNum = 1000;
            break;
        case "minute":
            divNum = 1000 * 60;
            break;
        case "hour":
            divNum = 1000 * 3600;
            break;
        case "day":
            divNum = 1000 * 3600 * 24;
            break;
        default:
            break;
    }
    return parseInt((eTime.getTime() - sTime.getTime()) / parseInt(divNum));
}

//                        
var day = GetDateDiff(startTime, endTime, 'day');

//       ,     data1 data2  "2018-03-09 00:00:00"      ，
//         “"2018-03-09”
function GetMonthDiff(date1, date2){
    date1 = new Date(date1);
    date2 = new Date(date2);
    var year1 = date1.getFullYear();
    var month1 = date1.getMonth()+1;
    var year2 = date2.getFullYear();
    var month2 = date2.getMonth()+1;
    if(year1 != year2){
        if(month1<month2){
            var res = (year2-year1)*12+(month2-month1);//   
            return res
        }else{
            var res = (year2-year1)*12-(month1-month2);
            return res
        }
    }else{
            var res = month2-month1
            return res
    }
  }
//  
console.log(dealDate("2018-03-09 00:00:00","2018-09-09 00:00:00"));
//      6

//              “6  0 ”
console.log(dealDate("2017-07-20","2018-01-28"));
//              
function dealDate(date1,date2){
  date1 = new Date(date1);//       "yyyy-MM-dd"      
  date2 = new Date(date2);
  var year1 = date1.getFullYear();
  var month1 = date1.getMonth()+1;
  var day1 = date1.getDate();
  var dateMax1 = new Date(year1,month1,0);
  var dayMax1 = dateMax1.getDate();
  var year2 = date2.getFullYear();
  var month2 = date2.getMonth()+1;
  var day2 = date2.getDate();
  var dateMax2 = new Date(year2,month2,0);
  var dayMax2 = dateMax2.getDate();
  if(day1==dayMax1&&day2==dayMax2){
  //             
  //       ，       
    var res = (year2-year1)*12+(month2-month1);//   
    var difYear = Math.floor(res/12);
    var difMonth = res%12;
    return ((difYear!=0)?(difYear+" "):"")+difMonth+"  ";
  }else if(day1==dayMax1&&day2<dayMax2){
  //       ，      
  //                  ,          
    var month3 = month2-1;
    var res = (year2-year1)*12+(month3-month1);//   
    var difYear = Math.floor(res/12);
    var difMonth = res%12;
    var difDay = day2;
    return ((difYear!=0)?(difYear+" "):"")+((difMonth!=0)?(difMonth+"  "):"")+difDay+" ";
  }else if(day1<dayMax1&&day2<dayMax2){
  //              
  //  1,day1
    if(day1<=day2){
      var res = (year2-year1)*12+(month2-month1);//   
      var difYear = Math.floor(res/12);
      var difMonth = res%12;
      var difDay = day2-day1;
      return ((difYear!=0)?(difYear+" "):"")+((difMonth!=0)?(difMonth+"  "):"")+difDay+" ";
    }else{
      var month3 = month2-1;
      var res = (year2-year1)*12+(month3-month1);//   
      var difYear = Math.floor(res/12);
      var difMonth = res%12;
      var difDayTemp = day1-day2;
      var dateMax3 = new Date(year2,month3,0);
      var dayMax3 = dateMax3.getDate();
      var difDay = dayMax3-difDayTemp;
      return ((difYear!=0)?(difYear+" "):"")+((difMonth!=0)?(difMonth+"  "):"")+difDay+" ";
    }
  }
}