angular - : Can't bind to 'ngFor' since it isn't a known native property异常

我究竟做错了什么？

import {bootstrap, Component} from 'angular2/angular2'

@Component({
  selector: 'conf-talks',
  template: `<div *ngFor="talk of talks">
     {{talk.title}} by {{talk.speaker}}
     <p>{{talk.description}}
   </div>`
})
class ConfTalks {
  talks = [ {title: 't1', speaker: 'Brian', description: 'talk 1'},
            {title: 't2', speaker: 'Julie', description: 'talk 2'}];
}
@Component({
  selector: 'my-app',
  directives: [ConfTalks],
  template: '<conf-talks></conf-talks>'
})
class App {}
bootstrap(App, [])

错误是

EXCEPTION: Template parse errors:
Can't bind to 'ngFor' since it isn't a known native property
("<div [ERROR ->]*ngFor="talk of talks">

最佳答案

我错过了let前面的talk:

<div *ngFor="let talk of talks">

请注意，不赞成使用#...在诸如NgFor之类的结构指令内部声明局部变量。请改用let。
<div *ngFor="#talk of talks">现在变成<div *ngFor="let talk of talks">
原始答案:

我错过了#前面的talk:

<div *ngFor="#talk of talks">

忘记#很容易。我希望Angular异常错误消息会改为:you forgot that # again。