路由到angular4中的父组件或从父组件路由

Question

Senario: I have 2 component in my app. I want to load the first component on page load and the component will have a link to navigate to the second component. The second component would in turn have a link to navigate back to the first component.

I am able to route with 2 routerLink above the router-outlet and move to and fro using the link. But how can I achieve the above scenario? Any basic plunker example would help.

Answer 1

I believe you have achieved everything. You only need to know how to achieve the same without using routerLink link. So here is the solution,

• Assume `homeComponent` is the component which loads when app starts.
• It has a button to go to about page(string coming from HTML & using typescript code)
• It has a router.navigate method which takes an appropriate route name and navigate it accordingly.
• And Vice versa

home.html

<button (click)="goto('about')"> go to about page </button>

home.ts

import {Router} from '@angular/router'

export class HomeComponent{
    consturctor(private router:Router){}

    goto(navigateTo:string){
          this.router.navigate([navigateTo])  //this line will take you to about component
    }
}

---

about.html

<button (click)="goto('home')"> go to about page </button>

about.ts

import {Router} from '@angular/router'

export class AboutComponent{
    consturctor(private router:Router){}

    goto(navigateTo:string){
          this.router.navigate([navigateTo])  //this line will take you to home component
    }
}