详解Angular4中路由Router类的跳转navigate

时间:2020-05-15 ZEKELOVE 人气:0

最近一直在学习angular4，它确实比以前有了很大的变化和改进，好多地方也不是那么容易就能理解，好在官方的文档和例子是中文，对英文不太好的还是有很大帮助去学习。

官方地址：https://angular.cnhttps://img.qb5200.com/download-x/docs/ts/latest/api/router/index/Router-class.html

在学习的过程中路由（router）机制是离不开的，并且好多地方都要用到。

首先路由配置Route：

import { NgModule }       from '@angular/core';
import { RouterModule, Routes } from '@angular/router';
 
import { HomeComponent }  from './home.component';
import { LoginComponent }   from './login.component';
import { RegisterComponent } from './register.component';
 
 const routes: Routes = [
  { path: '', redirectTo: '/home', pathMatch: 'full' },
  { path: 'home', component: HomeComponent },
  { path: 'login', component: LoginComponent },
  { path: 'heroes',   component: RegisterComponent }
 ];
 
 @NgModule({
  imports: [ RouterModule.forRoot(routes) ],
  exports: [ RouterModule ]
 })
 export class AppRoutingModule {}

其次路由跳转Router.navigate

 navigate(commands: any[], extras?: NavigationExtras) : Promise<boolean>

 interface NavigationExtras {
  relativeTo : ActivatedRoute
  queryParams : Params
  fragment : string
  preserveQueryParams : boolean
  queryParamsHandling : QueryParamsHandling
  preserveFragment : boolean
  skipLocationChange : boolean
  replaceUrl : boolean
}

1.以根路由跳转/login

this.router.navigate(['login']);

2.设置relativeTo相对当前路由跳转，route是ActivatedRoute的实例，使用需要导入ActivatedRoute

this.router.navigate(['login', 1],{relativeTo: route});

3.路由中传参数 /login?name=1

this.router.navigate(['login', 1],{ queryParams: { name: 1 } });

4.preserveQueryParams默认值为false，设为true，保留之前路由中的查询参数/login?name=1 to /home?name=1

this.router.navigate(['home'], { preserveQueryParams: true });

5.路由中锚点跳转 /home#top

 this.router.navigate(['home'],{ fragment: 'top' });

6.preserveFragment默认为false，设为true，保留之前路由中的锚点/home#top to /role#top

this.router.navigate(['/role'], { preserveFragment: true });

7.skipLocationChange默认为false，设为true，路由跳转时浏览器中的url会保持不变，但是传入的参数依然有效

this.router.navigate(['/home'], { skipLocationChange: true });

8.replaceUrl默认为true，设为false，路由不会进行跳转

this.router.navigate(['/home'], { replaceUrl: true });

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