What are Vue Router guards and how do they work?

What are Vue Router guards and how do they work?

Vue Router guards are functions that control access to routes in a Vue.js application. They can be used to check authentication, permissions, or perform other checks before navigating to a route.

Can you give me an example of a beforeEach guard?

Sure! Here's a simple example:

router.beforeEach((to, from, next) => {
  const isAuthenticated = false; // Replace with actual authentication check
  if (to.meta.requiresAuth && !isAuthenticated) {
    next({ name: 'Login' }); // Redirect to login if not authenticated
  } else {
    next(); // Proceed to the route
  }
});

What are the different types of guards available?

There are several types of guards in Vue Router:

1. Global Guards: beforeEach, beforeResolve, afterEach
2. Route-specific Guards: beforeEnter
3. Component Guards: beforeRouteEnter, beforeRouteUpdate, beforeRouteLeave.

How do I use route-specific guards?

You can define route-specific guards directly in the route definition like this:

const routes = [
  {
    path: '/protected',
    component: Protected,
    beforeEnter: (to, from, next) => {
      const isAuthenticated = false; // Check authentication
      if (isAuthenticated) {
        next();
      } else {
        next({ name: 'Login' });
      }
    }
  }
];