What is the role of middleware in Express.js, a popular framework for Node.js?
- Executing additional functions
- Managing session data
- Parsing JSON data
- Routing requests
Middleware in Express.js executes additional functions between receiving a request and sending a response. It can perform tasks like authentication, logging, parsing data, and modifying the request/response objects. Middleware functions have access to the request object (req), response object (res), and the next middleware function in the applications request-response cycle. This flexibility allows developers to modularize and enhance the functionality of their Express.js applications.
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