Query Parameters
Query parameters are key-value pairs appended to a URL after a question mark (?) to pass data to a web server or application. They are commonly used in HTTP requests to filter, sort, or paginate resources, such as in RESTful APIs or web forms. This mechanism allows for stateless communication between clients and servers by encoding parameters directly in the URL.
Developers should learn query parameters for building and consuming web APIs, as they enable dynamic data retrieval without modifying the base URL structure. They are essential for implementing features like search filters (e.g., ?q=term), pagination (e.g., ?page=2), and sorting (e.g., ?sort=date) in web applications. Understanding query parameters is crucial for working with HTTP-based services and ensuring efficient client-server interactions.