Unable to push value in an Array in ionic

Question

I am trying to push a value into an array but I am getting error:

Cannot read property 'push' of undefined.

My html code is:

<ion-item *ngFor="let item of items"  (click)="clicked(item.title)">
   {{item.title}}
   </ion-item>
</ion-list>

And my ts code is:

  clicked(item){

    this.addedtags.push(item);
    console.log(this.addedtags);     
  }

Possible duplicate of [Javascript/jQuery - "Cannot call method 'push' of undefined" while it IS defined](https://stackoverflow.com/questions/11882650/javascript-jquery-cannot-call-method-push-of-undefined-while-it-is-defined) — Jota.Toledo, Feb 08 '19 at 11:25

Helvetios · Accepted Answer · 2019-02-08T11:37:58.070

1

Your addedtags array is undefined. Initialize the array at the top of your class.

addedtags: any[] = []

Replace any with your specific datatype for cleaner code.

edited Feb 08 '19 at 11:37

answered Feb 08 '19 at 11:34

Helvetios

1

Good answer. I think it's good to mention that the piece you wrote needs to be at the top of the _class_ and not inside the function `clicked(item)` or it will be overwritten at each call – molamk Feb 08 '19 at 11:36

1 Answers1