JS get date yesterday, tomorrow and the last day of the month

JS back today, tomorrow, yesterday's date

1 functionGetdatestr (adddaycount) {2     varDD =NewDate ();3Dd.setdate (dd.getdate () + Adddaycount);//get the date adddaycount days4     varYear =dd.getfullyear ();5     varMon = Dd.getmonth () +1;//Gets the date of the current month6     varDay =dd.getdate ();7     returnYear + "-" + Mon + "-" +Day ;8}

1 day before yesterday: Getdatestr ( -2); 2 yesterday: Getdatestr ( -1); 3 Today: Getdatestr (0); 4 Tomorrow: Getdatestr (1); 5 Day After Tomorrow: Getdatestr (2);

JS gets the last day of the month and the date of the first day

1     varNowdays =NewDate ();2     varYear =nowdays.getfullyear ();3     varmonth =nowdays.getmonth ();4     if(month==0)5     {6Month=12;7Year=year-1;8     }9     if(Month < 10) {Tenmonth = "0" +month; One     } A     varFirstDay = year + "-" + month + "-" + "01";//the first day of last month -  -     varMyDate =NewDate (year, month, 0); the     varLastday = year + "-" + month + "-" + mydate.getdate ();//the last day of last month

JS get date yesterday, tomorrow and the last day of the month