Making changes to a property within a class does not automatically reflect those changes in the corresponding view

In my Typescript (.ts) file, this is the code I have:

 private today: Date = new Date();

And this is the corresponding HTML:

  <span [innerText]="today | date:dateFormat"></span>

Everything displays perfectly, showing 22nd May.

Now, I've added a button to subtract a day from the date:

previousDay() {
        Utils.addDays(this.today, -1);
        console.log(this.today);
    }

When I click on the button, the console correctly logs 21st May. However, the view in the UI remains at 22nd May.

Here is the link to the Plunker I created for reference: https://plnkr.co/edit/6hw1JW0h5zNvF0owcU9U?p=preview

What could be causing this issue?

angulartypescript

Answer №1

Make sure to implement the updated code for your previousDay function provided on plunker:

previousDay() {
 this.today = new Date(this.today.setDate(this.today.getDate() - 1))
 console.log(this.today); 
}

Trust this solution will be beneficial to you!

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