<elementRef>

import {ElementRef} from "@angular/core";

constructor(private element: ElementRef) {   // now, we can reference to: this.element}

this.element.nativeElement(‘.js-banner-container‘),

ElementRef

Provides access to the underlying native element (DOM element).

import {AfterContentInit, Component, ElementRef} from ‘@angular/core‘;@Component({  selector: ‘app‘,  template: `  <h1>My App</h1>  <pre style="background: #eee; padding: 1rem; border-radius: 3px; overflow: auto;">    <code>{{ node }}</code>  </pre>`})export class App implements AfterContentInit {  node: string;  constructor(private elementRef: ElementRef) {  }  ngAfterContentInit() {    const tmp = document.createElement(‘div‘);    const el = this.elementRef.nativeElement.cloneNode(true);    tmp.appendChild(el);    this.node = tmp.innerHTML;  }}

参考这篇 Angular 2: @Directive() 指令创建无限滚动

DOM in Angular2