How do I handle async operations in Vue routing guards?

How do I handle async operations in Vue routing guards?

In Vue, you can handle async operations in routing guards by returning a Promise. This allows you to wait for async tasks to complete before navigating.

Can you give me an example of that?

Sure! In your router configuration, you can use an async function in the beforeEnter guard like this:

beforeEnter: (to, from, next) => {
  fetchData().then(data => {
    if (data.isValid) {
      next(); // proceed to the route
    } else {
      next('/error'); // redirect to error page
    }
  });
}

What if the async operation fails?

If the async operation fails, you can handle it in the catch block. For example:

beforeEnter: (to, from, next) => {
  fetchData().then(data => {
    // handle success
  }).catch(error => {
    console.error(error);
    next('/error'); // redirect to error page
  });
}