The "Router State" in Angular refers to the state of the router as a tree of activated routes. It represents the current state of the Angular router, encapsulating the information about the active route at any given moment, including the URL, route parameters, query parameters, and other related data[16][17].
The Router State is a dynamic representation of the route structure, where each node in the tree corresponds to a specific route segment activated during navigation. This tree structure includes the hierarchy of activated route snapshots, each of which knows about the "consumed" URL segments, the extracted parameters, and the resolved data[9].
Angular manages navigation between views with a component-based router that interprets the browser's URL as an instruction to activate specific components and render their views. The Router State is crucial for this process as it allows Angular to keep track of the routing history and state of the application, making it possible to build complex nested routes, perform redirections, resolve data, and guard routes[15][18].
In practical terms, developers can interact with the Router State using the Angular Router service, which provides methods to navigate and manipulate the routing state programmatically. This includes retrieving information about the current route, navigating to new routes, and subscribing to router events to react to chan...
