vue 短期时间

选择时间

 1 lastMonthTime(){                        //30天前
 2        this.timeList(30)
 3     },
 4 timeList(Xday){                           //获取时间
 5       let myDate = new Date();              //时间
 6       let year = myDate.getFullYear()       //年
 7       let month = myDate.getMonth()+1       //月
 8       let day = myDate.getDate()            //日
 9       if(Xday<day){
10         day = day - Xday
11       }else if(Xday == day){
12         month = month - 1
13         if(month < 1){
14           year = year - 1
15           month = 12
16         }
17         if([1,3,5,7,8,10,12].includes.month){
18           day = 31
19         }else{
20           day = 30
21         }
22       }else if(Xday>day){
23         month = month - 1
24         if(month < 1){
25           year = year - 1
26           month = 12
27         }
28         if([1,3,5,7,8,10,12].includes.month){
29           day = 31 - (Xday-day)
30         }else{
31           day = 30 - (Xday-day)
32         }
33       }
34       let hours = myDate.getHours()         //时
35       let minutes = myDate.getMinutes()     //分
36       let seconds = myDate.getSeconds()     //秒
37       return year+'-'+month+'-'+day
38     },