How to use pushState on angular ?

You can follow these steps to achieve it:

1. import { Routes, RouterModule } from '@angular/router';
2. Create a routes config:

const routes: Routes = [ { path: '', redirectTo: '/videos', pathMatch: 'full' }, { path: 'videos', component: VideosComponent, children: [ { path: ':id', component: VideoComponent }, { path: '**', component: PlaceholderComponent } ] }, ]; 

3. Add RouterModule.forRoot(routes) to the imports array of your @NgModule:

@NgModule({ imports: [..., RouterModule.forRoot(routes), ...], ... }) export class AppModule { } 

4. Add a router-outlet tag to your app.component.html along with an anchor tag to videos route:

<a routerLink="/videos"> Videos </a> <router-outlet></router-outlet> 

5. In videos.component.html create another router-outlet tag with links to videos:

... <div> <a routerLink="./1">Video 1</a> | <a routerLink="./2">Video 2</a> | <a routerLink="./3">Video 3</a> | <a routerLink="./4">Video 4</a> | <a routerLink="./5">Video 5</a> | </div> <br> <router-outlet></router-outlet> 

6. You can now get the Video Id in the video component using ActivatedRoute. Use it to display the appropriate video:

import { Component, OnInit } from '@angular/core'; import { ActivatedRoute } from '@angular/router'; @Component({ selector: 'app-video', templateUrl: './video.component.html', styleUrls: ['./video.component.css'] }) export class VideoComponent implements OnInit { videoId; constructor(private activatedRoute: ActivatedRoute) { } ngOnInit() { this.activatedRoute.params.subscribe(params => this.videoId = params['id']); } } 

Here's a Sample StackBlitz for your ref.

UPDATE:

If you don't want to load all the videos, then don't make :id route as a child route to videos. Make this change to your routes config:

const routes: Routes = [ { path: 'videos', component: VideosComponent }, { path: 'videos/:id', component: VideoComponent }, { path: '', redirectTo: '/videos', pathMatch: 'full' } ]; 

And get rid of the additional router-outlet from the VideosComponent. That should be as per the way you want it. I've updated the Sample StackBlitz as well.

UPDATE 2

If you want to display some sort of a modal, then you can use ngx-bootstrap. And then in the video component's ngOnInit open the modal. When the user clicks to close the modal, just navigate back to /videos route.

import { Component, OnInit, TemplateRef, ViewChild } from '@angular/core'; import { ActivatedRoute, Router } from '@angular/router'; import { BsModalService } from 'ngx-bootstrap/modal'; import { BsModalRef } from 'ngx-bootstrap/modal/bs-modal-ref.service'; import { LocationListenerService } from '../location-listener.service'; @Component({ selector: 'app-video', templateUrl: './video.component.html', styleUrls: ['./video.component.css'] }) export class VideoComponent implements OnInit { videoId; modalRef: BsModalRef; @ViewChild('template') template: TemplateRef<any>; constructor( private activatedRoute: ActivatedRoute, private modalService: BsModalService, private router: Router ) { } ngOnInit() { this.activatedRoute.params.subscribe(params => this.videoId = params['id']); if(!this.modalRef) { this.openModal(this.template); } } openModal(template: TemplateRef<any>) { this.modalRef = this.modalService.show(template); } closeModal() { this.modalRef.hide(); this.router.navigate(['/videos']); } } 

And in your template:

<ng-template #template> <div class="modal-header"> <h4 class="modal-title pull-left">Modal</h4> <button type="button" class="close pull-right" aria-label="Close" (click)="closeModal()"> <span aria-hidden="true">&times;</span> </button> </div> <div class="modal-body"> <p> Playing Video {{ videoId }} </p> </div> </ng-template> 

This should do the job for you. I've re-edited the Sample StackBlitz. Just have a look.

PS: It won't navigate back to /videos on overlay click but the modal will close. That's just one case which you can take care of on your own. Rest all I've explained in the answer. Hope this helps.

UPDATE 3:

For showing the videos in the background, you'll have to again make the ':id' path, a child of the videos path. But then that would again require you to get all the videos to show upfront which is a condition that you wanted to avoid.

I've anyway made an update to the StackBlitz considering what you recently asked me to achieve.