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

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"

其他回答

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: [...]

)}

在angular 7中,通过在.module中添加这些行来解决这个问题。ts文件:

import {CommonModule} from @angular/common; 进口(CommonModule):

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"

再讲一种情况当我得到同样的错误时原因是用in而不是in迭代器

错误的方式让文件进入文件

正确的方式让文件的文件

在我的例子中,=和"之间应该没有空格,

错误的:

*ngFor = "let talk of talks"

正确的:

*ngFor="let talk of talks"