angularpopperpopperjs

How to use PopperJs 2 with Angular 13


I added PopperJS 2.11 as dependencie. Then I try to use Popper in AppComponent but I'm not sure how to call instance of Popper. Here is my code:

app.component.html:

<button #button>Click</button>
<div #tooltip>
    lorem ipsum
</div>

app.component.ts:

import { Component,OnInit, ViewChild} from '@angular/core';
import { createPopper, VirtualElement, Instance } from '@popperjs/core';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit {
  
  @ViewChild('button') button: Element | VirtualElement;
  @ViewChild('tooltip') tooltip: HTMLElement;

    ngAfterViewInit(){
        createPopper(this.button, this.tooltip, {
            modifiers: [
              {
                name: 'offset',
                options: {
                  offset: [0, 8],
                },
              },
            ],
        });
    }
    
}

But in console I have: createPopper.js:209 Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.


Solution

  • Update the problem is that you are write

    **WRONG**
    @ViewChild('button') button: Element | VirtualElement;
    @ViewChild('tooltip') tooltip: HTMLElement;
    

    With viewChild you get a ElementRef

      @ViewChild('bt', { static: true }) button!: ElementRef
      @ViewChild('tooltip', { static: true }) tooltip!: ElementRef
    

    And use

    this.popperInstance = Popper.createPopper(this.button.nativeElement,
                 this.tooltip.nativeElement)
    

    See a stackblitz with the first example of the tutorial

    NOTE: Don't forget install @propperjs/core

    npm i @popperjs/core
    

    see stackblitz