Angular is a popular open-source framework used to develop modern web applications. One of the key features of Angular is the use of routing to navigate between different pages and components. Routing provides a way to map a browser URL to a specific component in your application. The Angular router uses the concept of ActivatedRoute to access information about a current route and its associated parameters.
ActivatedRoute is a service provided by Angular that is used to access information about a current route and its associated parameters. The ActivatedRoute service is injected into your component as a dependency. It provides methods and properties that allow you to access the current route and its associated parameters.
To use the ActivatedRoute service, you must first import it into your component. You can do this by adding the following import statement at the top of your component file:
import { ActivatedRoute } from ‘@angular/router’;
Then, you must inject the ActivatedRoute service into your component’s constructor:
constructor(private route: ActivatedRoute) {}
Once you have injected the ActivatedRoute service, you can use its properties and methods to access information about the current route. For example, to get the current route’s parameters, you can use the params property:
ngOnInit() {
this.route.params.subscribe(params => {
console.log(params);
});
}
The ActivatedRoute service provides several properties that allow you to access information about the current route and its associated parameters:
paramMap: A map of the current route’s parameters.params: An observable that provides a map of the current route’s parameters.queryParamMap: A map of the current route’s query parameters.queryParams: An observable that provides a map of the current route’s query parameters.routeConfig: The route configuration for the current route.url: An observable that provides the current route’s URL.
The ActivatedRoute service also provides several methods that allow you to modify the current route and its associated parameters:
snapshot: Returns a snapshot of the current route’s parameter and query parameter values.setParamMap: Sets the current route’s parameter values.setQueryParams: Sets the current route’s query parameter values.
paramMap is a Observable object that provides a map of the current route’s parameters, while params is an Observable object that provides the current route’s parameter values as plain object. In simpler words, paramMap provides entire parameter map from the URL whereas params provides each individual parameter value.
Yes, you can modify the route parameters and query parameters in Angular using ActivatedRoute’s setParamMap and setQueryParams methods respectively.
The ActivatedRoute service is used to access information about the current route and its associated parameters, while the Router service is used to programmatically navigate between different routes. In simpler words, ActivatedRoute is used to get information about the current route and provide it to the component while Router is used to navigate to another route.