angular - 无法绑定(bind)到 'ngForFor'，因为它不是 'li' 的已知属性

Question

我的应用程序模块

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpModule } from '@angular/http';

import { AppComponent } from './app.component';
import { routing, appRoutingProviders} from './app.routing'
import { ProductSearchModule} from './productSearch/productSearch.module'

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    FormsModule,
    HttpModule,
    routing,
    ProductSearchModule
  ],
  providers: [appRoutingProviders],
  bootstrap: [AppComponent]
})
export class AppModule { }

我的 productSearch.module

import {NgModule} from '@angular/core'
import {ProductSearchComponent} from './productSearch.component'

@NgModule({
    exports: [ProductSearchComponent],
    declarations: [ProductSearchComponent],

})

export class ProductSearchModule{}

我的产品搜索组件

import { Component, Output } from '@angular/core'
import { Product} from '../shared/product'

@Component({
    selector: 'product-search',
    templateUrl: 'productSearch.component.html',
    styleUrls: ['productSearch.component.css'],

})

export class ProductSearchComponent{
    /**
     *
     */
    constructor() {
        var p1 = new Product;
        p1.name = "alkan";

        var p2 = new Product;
        p2.name = "alper";
        this.Products = [p1, p2];

    }

    Products: Product[]

    search(){

    }
}

productSearch.component.html 文件

<li *ngFor="let item for Products">{{item.name}}</li>

如您所见，这是 Angular 的一个非常基本的示例。我只想打印每个产品的名称。

我得到的错误:

Can't bind to 'ngForFor' since it isn't a known property of 'li'.

更新:

组件构造函数更改为

var p1 = new Product();
p1.name = "alkan";

var p2 = new Product();
p2.name = "alper";
this.Products = [p1, p2];

和模板 html 更改为

<li *ngFor="let item of Products">{{item.name}}</li>

但我还是报错:

Can't bind to 'ngForOf' since it isn't a known property of 'li'

Answer 1

我认为是:productSearch.component.html 文件中的 let item of Products 而不是 for。检查documentation