What is Vue route middleware and how do I use it?

What is Vue route middleware and how do I use it?

Vue route middleware is a function that runs before a route is entered. It can be used for authentication, logging, etc.

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

Sure! You can define a middleware function and use it 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 happens if I don't use middleware?

If you don't use middleware, your routes will be accessible without any checks, which may lead to unauthorized access.

Are there any built-in middleware functions in Vue?

Vue Router doesn't come with built-in middleware, but you can create your own or use third-party libraries for common tasks.