Angular之模版引用变量

A template reference variable is often a reference to a DOM element within a template. It can also be a reference to an Angular component or directive or a web component.

模板引用变量通常用来引用模板中的某个 DOM 元素，也可以引用 Angular 组件、指令、Web Component（自定义元素标签）。

store.component.ts

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

@Component({
  selector: 'app-store',
  templateUrl: './store.component.html',
  styleUrls: ['./store.component.css']
})
export class StoreComponent implements OnInit {

  name = 'SUV';

  constructor() { }

  ngOnInit() {
  }

}

store.component.html

<!-- 引用DOM元素 -->

<span #title>4S店</span>
<button (click)="print(title.innerHTML);">单击</button>

<input type="tel" #tel value="021-12345678"/>
<button (click)="print(tel.value);">单击</button>

<!-- 引用Angular组件 -->

<app-car #car></app-car>
<button (click)="print(car.name);">单击</button>

car.component.ts

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

@Component({
  selector: 'app-car',
  templateUrl: './car.component.html',
  styleUrls: ['./car.component.css']
})
export class CarComponent implements OnInit {

  name = 'SUV';

  constructor() { }

  ngOnInit() {
  }

}