How can I handle JWT errors in my Express.js frontend?

How can I handle JWT errors in my Express.js frontend?

You can handle JWT errors by checking the response status from your API calls and displaying appropriate messages.

What kind of error messages should I show to the user?

You can show messages like 'Token expired', 'Invalid token', or 'Authentication required' based on the error type.

How do I implement this in my code?

You can use a try-catch block around your API calls and handle different error responses accordingly.

Can you provide a code example?

Sure! Here's a simple example:

try {
  const response = await axios.get('/api/protected');
  // handle success
} catch (error) {
  if (error.response) {
    // handle JWT errors
    if (error.response.status === 401) {
      alert('Authentication required');
    }
  }
}