Using Route Parameters in a Component in Angular

Let's now see how we can use route parameters inside a component class.

Let's say we have the following route with parameters:

const routes: Routes = [
	{ path: 'aaaa/:id', component: AaaaComponent },
	{ path: 'bbbb', component: BbbbComponent },
];

Let's say we have links to go to this component with different parameters:

<nav>
	<a
		routerLink="/aaaa/1"
		routerLinkActive="active"
	>
		1
	</a>
	<a
		routerLink="/aaaa/2"
		routerLinkActive="active"
	>
		2
	</a>
	<a
		routerLink="/aaaa/3"
		routerLinkActive="active"
	>
		3
	</a>
</nav>

Let the child component contain the following array:

let arr: string = [
	'a', 'b', 'c', 'd', 'e'
];

export class AaaaComponent {

}

Let's get the corresponding array element depending on the value of the route parameter:

export class AaaaComponent {
	constructor(private activateRoute: ActivatedRoute) {
		let params = activateRoute.snapshot.params;
		let id = params['id'];
		
		this.value = arr[id];
	}
}

Let's display the resulting element in the view:

meaning: {{ value }}

Let the child component store the following array of objects:

[
	{
		name: 'user1',
		surn: 'surn1',
	},
	{
		name: 'user2',
		surn: 'surn2',
	},
	{
		name: 'user3',
		surn: 'surn3',
	},
]

Make a route with a parameter. Let the data of one of the users be displayed in the view depending on the parameter value.