How can I implement a global error handler in Vue.js?

How can I implement a global error handler in Vue.js?

You can implement a global error handler in Vue.js by using the errorCaptured lifecycle hook or by setting up a global error handler with Vue.config.errorHandler.

Can you show me an example of using Vue.config.errorHandler?

Sure! You can add the following code in your main.js file:

Vue.config.errorHandler = (err, vm, info) => {
  console.error('Error:', err);
  // You can also log the error to an external service here
};

What about handling errors in Vue Router?

For Vue Router, you can use the beforeEach navigation guard to catch errors during route changes. Here's an example:

router.beforeEach((to, from, next) => {
  try {
    next();
  } catch (error) {
    console.error('Router Error:', error);
    next(false); // Cancel the navigation
  }
});

Is there a way to display error messages to users?

Yes! You can create a global error component and use it to display error messages. You can set a reactive property to hold the error message and show it in your template.