How to Properly Handle HTTP Response Status Codes with Axios in ReactJS

Struggling to catch different HTTP response status codes using Axios in your ReactJS application? Learn how to efficiently handle errors and access status codes like 400 with this comprehensive guide!
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Handling HTTP Response Status Codes in ReactJS with Axios

When developing applications with ReactJS, you may run into scenarios where you need to handle different HTTP response status codes. One common issue developers face is the inability to catch specific response statuses, such as a 400 Bad Request when using Axios for API calls.

In this guide, we’ll explore a common problem encountered while using custom Axios instances and provide a clear, step-by-step solution.

The Problem

In a typical ReactJS application, you might have set up Axios to make HTTP requests to an API. However, a user encountered an issue where their custom Axios instance only allowed them to retrieve a status of 200 (OK), and they were unable to catch a response status of 400 (Bad Request). The relevant code snippet looked like this:

[[See Video to Reveal this Text or Code Snippet]]

The Solution

Implementing Error Handling with Catch

To address this issue, you need to implement a way to handle errors directly. The recommended approach is to use the .catch() method while making your API call. This will allow you to access the error response and retrieve the appropriate status code.

Here's how you can modify the existing code to handle errors effectively:

[[See Video to Reveal this Text or Code Snippet]]

Breaking Down the Solution

Use of Catch:

The .catch() method catches any errors that occur during the API call.

Accessing Status Codes:

After implementing the catch method, you can now check the status property from the res object as desired:

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Keeping Your Code Clean:

By handling errors gracefully this way, you maintain clean and readable code. You can manage different HTTP responses without cluttering your main logic.

Example Refactor

Here’s a complete example of how your login function might look with this change:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

Handling HTTP response status codes correctly is vital for ensuring a robust user experience in your ReactJS applications. By seamlessly implementing the .catch() method in your Axios calls, you can easily capture various responses, including error statuses like 400 Bad Request.

Make sure to adapt this error handling approach in your projects, and you’ll find that getting proper feedback from your APIs becomes significantly simpler.

Remember, efficient error handling not only helps in debugging but also improves the overall reliability of your application!