What are Vue route guards and how do they work?

What are Vue route guards and how do they work?

Vue route guards are functions that control access to routes in a Vue application. They can be used to protect routes, redirect users, or perform checks before entering a route.

Can you give me an example of how to implement a route guard?

Sure! You can define a route guard in your router configuration like this:

const router = new VueRouter({
  routes: [
    {
      path: '/protected',
      component: ProtectedComponent,
      beforeEnter: (to, from, next) => {
        if (isAuthenticated()) {
          next();
        } else {
          next('/login');
        }
      }
    }
  ]
});

What are the different types of route guards available?

There are three main types of route guards in Vue: global guards, per-route guards, and in-component guards. Global guards apply to all routes, per-route guards are specific to a single route, and in-component guards are defined within the component itself.

How do I handle asynchronous operations in route guards?

You can handle asynchronous operations in route guards by returning a Promise or using async/await. For example:

beforeEnter: async (to, from, next) => {
  const isAuthenticated = await checkAuth();
  if (isAuthenticated) {
    next();
  } else {
    next('/login');
  }
}