How To Detect A 401 With Axios And Stop The Console Error

Have you ever encountered a frustrating 401 error while working with Axios in your code? Don't worry, you're not alone! The good news is that there's a simple solution that will help you detect and handle these errors effectively. In this article, we'll walk you through how to catch a 401 error using Axios and stop those pesky console logs from cluttering up your development environment.

To begin, let's first understand what a 401 error means when working with Axios. A 401 status code is returned by a server to indicate that the client making the request needs to provide proper authentication credentials for the resource being accessed. In simpler terms, it often signifies that you need to log in or authenticate yourself before you can access the requested data.

Now, let's dive into the practical steps to detect and handle a 401 error with Axios in your code. The key is to utilize Axios interceptors, which allow you to "intercept" outgoing requests or incoming responses before they are handled by your application.

First, you need to set up an interceptor to catch 401 errors specifically. You can achieve this by adding the following code snippet to your Axios configuration:

Javascript

axios.interceptors.response.use(response =&gt; {
  return response;
}, error =&gt; {
  if (error.response.status === 401) {
    // Handle 401 error here
  }
  return Promise.reject(error);
});

In this code snippet, we're intercepting the response before it's passed back to your application. If the response status is 401, we can perform a specific action, such as redirecting the user to a login page or displaying a custom error message.

Next, you'll want to stop those annoying console errors from popping up every time a 401 error occurs. To do this, you can add a simple check within your interceptor to prevent Axios from logging the error to the console:

Javascript

axios.interceptors.response.use(response =&gt; {
  return response;
}, error =&gt; {
  if (error.response.status === 401) {
    // Handle 401 error here
    return Promise.reject(error);
  }
  return Promise.reject(error);
});

By explicitly returning Promise.reject(error) within the conditional block for 401 errors, you are effectively preventing Axios from logging the error to the console.

In conclusion, detecting and handling 401 errors with Axios doesn't have to be a headache. By leveraging Axios interceptors and a simple error-handling strategy, you can effectively manage and address these authentication issues in your code. Remember, interceptors are a powerful tool that can help streamline your error-handling process and improve the overall user experience of your application.

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