js 获取两个时间戳之间相隔多少天多少小时多少分多少秒

function getRemainderTime (startTime){
          var s2 = new Date(startTime.replace(/-/g, "/")),
          s1 = new Date(),
          runTime = parseInt((s2.getTime() - s1.getTime()) / 1000);
          var year = Math.floor(runTime / 86400 / 365);
          runTime = runTime % (86400 * 365);
          var month = Math.floor(runTime / 86400 / 30);
          runTime = runTime % (86400 * 30);
          var day = Math.floor(runTime / 86400);
          runTime = runTime % 86400;
          var hour = Math.floor(runTime / 3600);
          runTime = runTime % 3600;
          var minute = Math.floor(runTime / 60);
          runTime = runTime % 60;
          var second = runTime;
        // console.log(year,month,day,hour,minute,second);
        return year+','+month+','+day+','+hour+','+minute+','+second;
      
      }