如何在angular 6中的下一个div上添加类，比如accordion？

<div #nextDiv></div>

import { Component, ViewChild, AfterViewInit } from '@angular/core';

@Component({
  selector: 'app-your-component',
  templateUrl: './your-component.component.html',
  styleUrls: ['./your-component.component.css']
})
export class YourComponent implements AfterViewInit {
  @ViewChild('nextDiv') nextDiv: ElementRef;

  ngAfterViewInit() {
    this.nextDiv.nativeElement.classList.add('accordion');
  }
}

.accordion {
  /* 添加你的样式 */
}