详解Angular4中路由Router类的跳转navigate

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.cn/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 });