Angular刷新当前页面的实现方法

onSameUrlNavigation

从angular5.1起提供onSameUrlNavigation来支持路由重新加载。

有两个值'reload'和'ignore'。默认为'ignore'

定义当路由器收到一个导航到当前 URL 的请求时应该怎么做。 默认情况下，路由器将会忽略这次导航。但这样会阻止类似于 "刷新" 按钮的特性。 使用该选项可以配置导航到当前 URL 时的行为。

使用

配置onSameUrlNavigation

@NgModule({
 imports: [RouterModule.forRoot(
  routes,
  { onSameUrlNavigation: 'reload' }
 )],
 exports: [RouterModule]
})

reload实际上不会重新加载路由，只是重新出发挂载在路由器上的事件。

配置runGuardsAndResolvers

runGuardsAndResolvers有三个值：

• paramsChange: 仅在路由参数更改时触发。如/reports/:id 中id更改
• paramsOrQueryParamsChange: 当路由参数更改或参训参数更改时触发。如/reports/:id/list"htmlcode">

  const routes: Routes = [
   {
    path: '',
    children: [
     { path: 'report-list', component: ReportListComponent },
     { path: 'detail/:id', component: ReportDetailComponent, runGuardsAndResolvers: 'always' },
     { path: '', redirectTo: 'report-list', pathMatch: 'full' }
    ]
   }
  ];
  

  组件监听router.events
  

  import {Component, OnDestroy, OnInit} from '@angular/core';
  import {Observable} from 'rxjs';
  import {Report} from '@models/report';
  import {ReportService} from '@services/report.service';
  import {ActivatedRoute, NavigationEnd, Router} from '@angular/router';
  
  @Component({
   selector: 'app-report-detail',
   templateUrl: './report-detail.component.html',
   styleUrls: ['./report-detail.component.scss']
  })
  export class ReportDetailComponent implements OnInit, OnDestroy {
   report$: Observable<Report>;
   navigationSubscription;
  
   constructor(
    private reportService: ReportService,
    private router: Router,
    private route: ActivatedRoute
   ) {
    this.navigationSubscription = this.router.events.subscribe((event: any) => {
     if (event instanceof NavigationEnd) {
      this.initLoad(event);
     }
    });
   }
  
   ngOnInit() {
    const id = +this.route.snapshot.paramMap.get('id');
    this.report$ = this.reportService.getReport(id);
   }
  
   ngOnDestroy(): void {
    // 销毁navigationSubscription，避免内存泄漏
    if (this.navigationSubscription) {
     this.navigationSubscription.unsubscribe();
    }
   }
  
   initLoad(e) {
    window.scrollTo(0, 0);
    console.log(e);
   }
  }
  
  

  以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。