Vue router guard

Vue Router guards are used to control the navigation behavior in a Vue application. Guards are functions that can be applied to routes or to the router instance as a whole. They are executed during the navigation process, allowing you to perform certain actions before or after a route is accessed.

There are three types of Vue Router guards:

  1. Global Guards:
  2. beforeEach(to, from, next): This guard is called before each route navigation. It receives the to and from route objects, as well as a next function which needs to be called to proceed with the navigation.

  3. afterEach(to, from): This guard is called after each route navigation. It receives the to and from route objects, and can be used for logging or analytics purposes.

  4. Per-Route Guards:

  5. beforeEnter(to, from, next): This guard is specific to a particular route and is defined within the route configuration. It is called before entering the route and receives the to and from route objects, as well as a next function.
  6. beforeRouteEnter(to, from, next): This guard is called before the component associated with the route is created. It receives the to and from route objects, and a next function that can be called with a callback to access the component instance.
  7. beforeRouteUpdate(to, from, next): This guard is called when the route parameters change but the component is reused. It receives the to and from route objects, and a next function.

  8. beforeRouteLeave(to, from, next): This guard is called when leaving a route. It receives the to and from route objects, and a next function.

  9. Component Navigation Guards:

  10. beforeRouteEnter(to, from, next): This guard is specific to a component and is defined within the component's options. It is called before the component is created and receives the to and from route objects, as well as a next function.
  11. beforeRouteUpdate(to, from, next): This guard is called when the route parameters change but the component is reused. It receives the to and from route objects, and a next function.
  12. beforeRouteLeave(to, from, next): This guard is called when leaving a route that the component is associated with. It receives the to and from route objects, and a next function.

These guards can be used to implement authentication, authorization, and other navigation-related logic in a Vue application. By utilizing these guards, you can have granular control over the navigation behavior and ensure a smooth user experience.