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Angular 22 Interceptors Complete Tutorial
Angular’s HttpClient offers a powerful feature called interceptors, which act as middleware for HTTP requests and responses.
In this guide, we’ll explore everything you need to know about interceptors, from basic concepts to advanced techniques.
Understanding Interceptors
Interceptors in HttpClient are functions or classes that can intercept outgoing HTTP requests and incoming responses.
Interceptors act as middleware for HTTP requests and responses.
Interceptors are like helpers for handling HTTP requests and responses in Angular.
Common use cases for interceptors
🟡 Adding authentication headers
🟡 Retrying failed requests
🟡 Caching responses
🟡 Measuring server response times and log them
🟡 Driving UI elements such as a loading spinner while network operations are in progress
Types of Interceptors
HttpClient supports two main types of interceptors:
1. Functional Interceptors
2. DI-based Interceptors
