How do I set up router guards in Vue.js?

How do I set up router guards in Vue.js?

To set up router guards in Vue.js, you can use the beforeEach method in your router configuration. This allows you to define navigation guards that can control access to routes.

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

Sure! Here's a basic example:

const router = new VueRouter({
  routes: [
    { path: '/protected', component: ProtectedComponent, meta: { requiresAuth: true } },
    // other routes
  ]
});

router.beforeEach((to, from, next) => {
  const isAuthenticated = // your logic to check authentication;
  if (to.matched.some(record => record.meta.requiresAuth) && !isAuthenticated) {
    next({ path: '/login' });
  } else {
    next();
  }
});

What if I want to add a loading spinner while the guard checks?

You can manage a loading state in your component or Vuex store. Set the loading state to true before the guard checks and false after. You can then show a spinner based on this state.

Thanks! Is there a way to handle errors in the guard?

Yes, you can catch errors in your guard logic and redirect to an error page or show a notification. Just wrap your logic in a try-catch block.