我做错了什么?

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">

当前回答

在我的例子中,我犯了从文档中复制*ng-for=的错误。

https://angular.io/guide/user-input

如果我错了,请指正。但是*ng-for=似乎已经被更改为*ngFor=

其他回答

你应该使用let关键字来声明局部变量 e.g. *ngFor="让我们谈谈吧"

对我来说,在app.module.ts文件中没有正确导入组件。导入后一切工作正常

@NgModule({
    declarations: [
      YourComponent,
      OtherComponents
    ],
    
    imports: [...]

)}

使用这个

<div *ngFor="let talk of talks"> 
   {{talk.title}} 
   {{talk.speaker}}
   <p>{{talk.description}}</p>
</div>
    

您需要指定变量以遍历对象的数组

有同样的问题,因为我使用了 *ngFor='for let card of cards' 而不是: *ngFor='let card of cards'

一开始就有一些for循环这里错了吗 它工作了,但有错误

此语句用于Angular2 Beta版本.....

以后用let代替#

Let关键字用于声明局部变量