how to subtract a day from current date in angular 9

Question

ngOnInit(): void {
    this.currentDate = new Date();
    this.date = this.datePipe.transform(this.currentDate, 'y-MM-dd');
    this.currentDate = this.date;
}

In the above code Im getting current date. The requirement is from this current date need to subtract a day means i can get yesterday.

check this link https://stackoverflow.com/questions/47260283/how-to-get-the-previous-date-in-angular/47260315#47260315 — Ganesh Rana, Jul 16 '20 at 10:34

score 4 · Accepted Answer · edited Apr 03 '23 at 07:34

4

To output the date of yesterday, use the following block of code.

export class DateComponent implements OnInit{
    datePipe = new DatePipe('en');
    public today?: Date;
    public yesterday?: string | null;

  ngOnInit(){
    // The following output tests the method 'getYesterday()'.
    console.log(this.getYesterday());
  }

  getYesterday(){
    this.today = new Date();
    this.today.setDate(this.today.getDate() - 1);
    // The following returns the formatted date.
    return this.yesterday = this.datePipe.transform(this.today, 'dd-MM-y');
  }
}

edited Apr 03 '23 at 07:34

Graham John

170
12

answered Jul 16 '20 at 10:34

surendra kumar

1,686
11
15

if it works for you , please accept and upvote. – surendra kumar Jul 16 '20 at 10:46
my current date is in this format "2020-07-16" and would like to get yesterday in the same format as "2020-07-15" – Ganesh babu Jul 16 '20 at 11:08
I have edited the answer, please accept and upvote. – surendra kumar Jul 16 '20 at 11:12
Please upvote the answer not down. – surendra kumar Jul 16 '20 at 12:15
yes, I only upvoted your answer. Thanks – Ganesh babu Jul 16 '20 at 12:31

score 1 · Answer 2 · 2020-07-16T12:38:39.750

1

This function adds any amount of days to the passed Date object. By passing -1 we effectiviely subtract a day.

function addDays(a_oDate: Date, days: number): Date {
        a_oDate.setDate(a_oDate.getDate() + days);
        return a_oDate;
    }
    
    console.log(addDays(new Date(), - 1));

As a sidenote, try not to use pipes in your components, and refer to How to format a JavaScript date on more details on how to format your date.

edited Jul 16 '20 at 12:38

answered Jul 16 '20 at 10:34

Could you add comments or a bit explanation to your code. – Jonathan Stellwag Jul 16 '20 at 12:29

how to subtract a day from current date in angular 9

2 Answers2