如何使用ng-bootstrap一次显示/折叠所有折叠面板

npm install --save @ng-bootstrap/ng-bootstrap

import { Component } from '@angular/core';
import { NgbAccordionConfig } from '@ng-bootstrap/ng-bootstrap';

@Component({
  selector: 'app-your-component',
  templateUrl: './your-component.html',
  providers: [NgbAccordionConfig]
})
export class YourComponent {
  constructor(config: NgbAccordionConfig) {
    config.closeOthers = false;
  }
}

<ngb-accordion>
  <ngb-panel *ngFor="let panel of panels">
    <ng-template ngbPanelTitle>
      {{ panel.title }}
    </ng-template>
    <ng-template ngbPanelContent>
      {{ panel.content }}
    </ng-template>
  </ngb-panel>
</ngb-accordion>