Unable to find property 'ID' within the 'Node' type in TypeScript

Encountered an issue while working with TypeScript for Angular2, trying to retrieve the id of an element. Consider the following example:

<div id="search">
    <div id="field1"></div>
    <div id="field2"></div>
</div>

Attempting to obtain the id of a nested div using traditional JavaScript can be achieved like so:

var element = document.getElementById("search");
var subelement = element.childNodes;
subelement[1].id;

This would return "field2".

However, when attempting the same in TypeScript, an error message is returned: Property 'id' does not exist on type 'Node'. Consequently, the code fails to execute. Searching for a solution as it is crucial for me to access nested elements within another element, unless there is a more efficient approach.

javascripttypescriptangular

Answer №1

Elements within a node may not always have an associated id. It is recommended to utilize the .children property, which consists of elements exclusively.

Answer №2

issue TS2551: The property 'setAttribute' is not found on the type 'Node'. Did you mean 'attributes'?

let elements = document.querySelectorAll("text");

elements[k].style.transform = '...........';
//error

elements[k]['style'].transform = '..........';
//works fine

elements[k].parentNode.setAttribute('....');
//error

elements[k].parentNode['setAttribute']('..');
//is functional

Answer №3

Instead of using document.getElementById to reference a DOM element in Angular2, I prefer to utilize @ViewChild as shown below:

@Component({
  (...)
  template: `
    <div #search>
      <div id="field1"></div>
      <div id="field2"></div>
    </div>
  `
})
export class AnotherComponent {
  @ViewChild('search') searchElement:ElementRef;

  ngAfterViewInit() {
    let domElement = searchElement.nativeElement;
    (...)
  }
}

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