Axios: Handling Errors with HTTP Codes
HTTP Codes and Error Handling
The validateStatus config option in Axios allows you to define HTTP codes that should trigger an error. By utilizing this feature, you can control which responses from the server are considered successful and which ones should result in errors.
Handling Failures and Errors
Axios provides a robust mechanism for handling various types of failures and errors, including network errors, timeout errors, and server-side errors. Understanding how to handle these errors effectively is crucial for maintaining a reliable and user-friendly application.
Types of Errors
- Network Errors: Caused by issues with internet connectivity or server unavailability.
- Timeout Errors: Occur when a request exceeds the specified timeout limit.
- Server-Side Errors: Returned by the server, indicating a problem with the request or server-side processing.
Customizing Error Handling
Axios offers a flexible way to customize error handling through interceptors. Interceptors are functions that can be registered to intercept requests or responses and modify them before they are sent or received.
By using interceptors, you can handle all basic errors in your request module without the need to use catch on each call. This approach provides a central point for error handling, making it easier to maintain and debug your application.
Example
// register interceptor to handle all basic errors axios.interceptors.response.use( function (response) { // do something with response return response; }, function (error) { // handle the error return Promise.reject(error); } ); Conclusion
Handling errors effectively in Axios is essential for developing robust and user-friendly applications. By leveraging the validateStatus config option, you can define HTTP codes that should trigger errors. Additionally, Axios provides customizable error handling through interceptors, allowing you to manage errors in a centralized and efficient manner.
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