如何覆盖 Angular 5 中的组件? [英] How to overwrite a component in Angular 5?
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问题描述
我在 Angular 5 中有一个
组件
I have a component <my-component>
in Angular 5
@Component({
selector: 'my-component',
templateUrl: './my.component.html',
styleUrls: ['./my.component.css']
})
export class MyComponent {
click(param: string){
console.log(param);
}
在我的 html 中,我有这样的内容:
And in my html I have something like this:
<my-component (click)="click('Hello world')"></my-component>
我需要覆盖点击函数来执行:console.log('Param: ' + param);
I need to overwrite click function to execute:
console.log('Param: ' + param);
我该怎么做???
推荐答案
在你的 app.module.ts
In your app.module.ts
import { OriginalComponent } from './original/original.component';
import { MockOfOriginalComponent } from './mock/mock-of-original.component';
@NgModule({
declarations: [
AppComponent,
WelcomeComponent,
OriginalComponent,
MockOfOriginalComponent
],
providers: [],
imports: [
BrowserModule,
HttpClientModule,
RouterModule.forRoot([
{ path: 'welcome', component: WelcomeComponent },
{ path: 'pm-mock-of-original', component: MockOfOriginalComponent },
{ path: 'pm-original', redirectTo: 'pm-mock-of-original' },
]),
],
bootstrap: [AppComponent]
})
export class AppModule { }
您的原始组件
@Component({
moduleId: module.id,
selector: 'pm-original',
templateUrl: 'original.component.html',
styleUrls: ['original.component.scss']
})
export class OriginalComponent {
}
你的 MockOfOriginalComponent
Your MockOfOriginalComponent
@Component({
moduleId: module.id,
selector: 'pm-mock-of-original',
templateUrl: 'mock-of-original.component.html',
styleUrls: ['mock-of-original.component.scss']
})
export class MockOfOriginalComponent {
}
诀窍是在你的 AppModule 中重定向
The trick is the redirection in your AppModule
{ path: 'pm-mock-of-original', component: MockOfOriginalComponent },
{ path: 'pm-original', redirectTo: 'pm-mock-of-original' }
我在本地进行了测试,它运行正常.如果它不试试这个
I tested this locally and it worked properly. If it doesn't try this
{ path: 'pm-mock-of-original', component: MockOfOriginalComponent },
{ path: 'pm-original', redirectTo: 'pm-mock-of-original', pathMatch: 'full' }
当您从(外部)模块导入两个组件时,这也适用.
This also works when you import both components from (external) modules.
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