Tips for extracting value from a dynamic element in Angular 2

Here is the HTML code:

<tr *ngFor="let item of items">
      <td #id>{{item.id}}</td>         
      <td>{{item.comment}}</td>
      <td> <i class="fa fa-trash-o" aria-hidden="true"  (click)="deleteTime(id.value)"></i></td>
    </tr>

DeleteTime method explained in the component:

deleteTime(id_value) {
let id = id_value;
var arg= {
  "id": id
};

this.myService.deleteTime(arg).subscribe();
  }

While I have successfully created my html elements and the deleteTime button click event successfully activates when the user clicks the image, the issue arises where id.value returns as undefined. This prevents me from deleting the intended item. The problem seems to be related to how I am retrieving the value of #id td. Despite trying various methods such as passing {{item.id}} in the clickevent, each attempt resulted in a syntax error.

Answer №1

<tr *ngFor="let element of elements">
  <td #identifier>{{element.id}}</td>         
  <td>{{element.comment}}</td>
  <td> <i class="fa fa-trash-o" aria-hidden="true"  (click)="removeTime(identifier)"></i></td>
</tr>

removeTime(elementId:HTMLElement) {
let id = elementId.innerText;
var params= {
 "id": id
};

this.dataService.removeTime(params).subscribe();
}

Instead of passing the value directly, I accessed the innerText of the HTML Element that was passed.

Answer №2

This strategy was definitely not the best choice. It would be more efficient to utilize the id directly from the item instead of relying on innerHTML. Just use deleteItem(item.id) and you're good to go.

No need for this unnecessary step:

let itemId = itemIdElement.innerText;
var args= {
 "id": itemId
};

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