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 — Jota.Toledo
– Jota.Toledo, Commented Feb 8, 2019 at 11:25

score 1 · Accepted Answer · 2019-02-08 11:37:58Z

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 8, 2019 at 11:37

answered Feb 8, 2019 at 11:34

user5426760

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1 Comment

molamk Over a year ago

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

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