Description: An application error handler in web applications is a function designed to intercept and manage errors that may arise during the execution of the application. This mechanism allows developers to define how different types of exceptions should be handled, providing an appropriate response to the user and preventing the application from crashing abruptly. By implementing an error handler, the user experience can be customized, displaying friendly error messages or redirecting to specific pages in case of failures. Additionally, it allows for error logging for later analysis, which is crucial for the maintenance and continuous improvement of the application. Error handlers can be associated with specific HTTP status codes, such as 404 for ‘Not Found’ or 500 for ‘Internal Server Error’, making it easier to manage common errors in web applications. This functionality is essential for ensuring the robustness and usability of applications, as it helps maintain user trust even when issues occur.
