Angular 中的路由
一、Angular 创建一个默认带路由的项目...............................................................................1
二、Angular routerLink 跳转页面 默认路由...................................................................... 3
三、Angular routerLinkActive 设置 routerLink 默认选中路由................................................ 3
四、动态路由.............................................................................................................................4
五、动态路由的 js 跳转............................................................................................................5
六、路由 get 传值 js 跳转.........................................................................................................5
七、父子路由.............................................................................................................................6
一、Angular 创建一个默认带路由的项目
1. 命令创建项目
ng new angualrdemo08 --skip-install
2. 创建需要的组件
ng g component home
ng g component news
ng g component newscontent3. 找到 app-routing.module.ts 配置路由
引入组件
import { HomeComponent } from './home/home.component';
import { NewsComponent } from './news/news.component';
import { NewscontentComponent } from './newscontent/newscontent.component';
配置路由
const routes: Routes = [
{path: 'home', component: HomeComponent},
{path: 'news', component: NewsComponent},
{path: 'newscontent/:id', component: NewscontentComponent},
{
path: '',
redirectTo: '/home',
pathMatch: 'full'
}
];
4. 找到 app.component.html 根组件模板，配置 router-outlet 显示动态加载的路由
<h1>
<a routerLink="/home">首页</a>
<a routerLink="/news">新闻</a>
</h1>
<router-outlet></router-outlet>二、Angular routerLink 跳转页面 默认路
由
<a routerLink="/home">首页</a>
<a routerLink="/news">新闻</a>
//匹配不到路由的时候加载的组件 或者跳转的路由
{
path: '**', /*任意的路由*/
// component:HomeComponent
redirectTo:'home'
}
三、Angular
routerLinkActive
设
置
routerLink 默认选中路由
<h1>
<a routerLink="/home" routerLinkActive="active">首页</a>
<a routerLink="/news" routerLinkActive="active">新闻</a>
</h1>
<h1>
<a [routerLink]="[ '/home' ]" routerLinkActive="active">首页</a>
<a [routerLink]="[ '/news' ]" routerLinkActive="active">新闻</a>
</h1>.active{
color:red;
}
四、动态路由
1.配置动态路由
const routes: Routes = [
{path: 'home', component: HomeComponent},
{path: 'news', component: NewsComponent},
{path: 'newscontent/:id', component: NewscontentComponent},
{
path: '',
redirectTo: '/home',
pathMatch: 'full'
}
];
2.跳转传值
<a [routerLink]="[ '/newscontent/',aid]">跳转到详情</a>
<a routerLink="/newscontent/{{aid}}">跳转到详情</a>
3.获取动态路由的值
import { ActivatedRoute} from '@angular/router';
constructor( private route: ActivatedRoute) {
}
ngOnInit() {
console.log(this.route.params);
this.route.params.subscribe(data=>this.id=data.id);
}五、动态路由的 js 跳转
1. 引入
import { Router } from '@angular/router';
2.初始化
export class HomeComponent implements OnInit {
constructor(private router: Router) {
}
ngOnInit() {
}
goNews(){
// this.router.navigate(['/news', hero.id]);
this.router.navigate(['/news']);
}
}
3.路由跳转
this.router.navigate(['/news', hero.id]);
六、路由 get 传值 js 跳转
1. 引入 NavigationExtrasimport { Router ,NavigationExtras} from '@angular/router';
2.定义一个 goNewsContent 方法执行跳转，用 NavigationExtras 配置传参。
goNewsContent(){
let navigationExtras: NavigationExtras = {
queryParams: { 'session_id': '123' },
fragment: 'anchor'
};
this.router.navigate(['/news'],navigationExtras);
}
3.获取 get 传值
constructor(private route: ActivatedRoute) {
console.log(this.route.queryParams);
}
七、父子路由
1. 创建组件引入组件
import { NewsaddComponent } from './components/newsadd/newsadd.component';
import { NewslistComponent } from './components/newslist/newslist.component';2. 配置路由
{
path: 'news',
component:NewsComponent,
children: [
{
path:'newslist',
component:NewslistComponent
},
{
path:'newsadd',
component:NewsaddComponent
}
]
}
3. 父组件中定义 router-outlet
<router-outlet></router-outlet>