事件绑定不起作用 Angular2

Question

我希望点击的 div 内容出现在另一个 div 中（通过插值）。但是当我点击 div - 我的 "view" div 里面什么也没有出现。请看下面我的代码：

@Component({
selector: 'my-app',
template: `
<div class="wrap">
  <div (click)="clicked($event)">
    <h2>Hello {{name}}</h2>
  </div>
  <div (click)="clicked($event)">
    <h2>Hello {{year}}</h2>
  </div>
  <div (click)="clicked($event)">
    <h2>Hello {{surname}}</h2>
  </div>
  <div (click)="clicked($event)">
    <h2>Hello {{country}}</h2>
  </div>
  <div (click)="clicked($event)">
    <h2>Hello {{cartoon}}</h2>
  </div>
</div>

<div class="view">
  {{target}}
</div>

  `,
})
export class App {
  name:string;
  year: string;
  surname: string;
  country: string;
  cartoon: string;


  clicked(event) {
    var target = event.target;
  }


constructor() {
this.name = 'Angular2'
 this.year = '1989'
  this.surname = 'Connor'
   this.country = 'USA'
    this.cartoon = 'Tom & Jerry'
  }



}

没有按预期工作。 Here's my Plunker example

我的代码有什么问题？

Answer 1

使用 this 绑定到模板。您正在将事件绑定到局部变量。所以你的 class 应该是这样的：

export class App {
  name:string;
  year: string;
  surname: string;
  country: string;
  cartoon: string;
  element: any;
  target:any;

  clicked(event) {
    this.target = event.target.innerText;
  }

更新的插件：https://plnkr.co/edit/cnA0nGTjdsHGqCKWTQ7c?p=preview

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