07 - Implement Root-Level Request Logger Middleware - Basic Node and Express - freeCodeCamp Tutorial

We can create our own Middleware functions to intercept routes. We can then work with the request and response as we wish, and then call the next() method to run the next route.

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Concepts: Middleware Middleware functions are functions that have access to the request object (req), the response object (res), and the next middleware function in the application’s request-response cycle. The next middleware function is commonly denoted by a variable named next. http://expressjs.com/en/guide/using-middleware.html

request.path Contains the path part of the request URL. https://expressjs.com/en/api.html#req.path

request.method Contains a string corresponding to the HTTP method of the request: GET, POST, PUT, and so on. https://expressjs.com/en/api.html#req.method

request.ip Contains the remote IP address of the request. https://expressjs.com/en/api.html#req.ip

app.use() Mounts the specified middleware function or functions at the specified path: the middleware function is executed when the base of the requested path matches path. https://expressjs.com/en/api.html#app.use

-————————————————————————————————————- Node.js is an open-source, cross-platform, JavaScript runtime environment that executes JavaScript code outside a web browser. Node.js lets developers use JavaScript to write command line tools and for server-side scripting—running scripts server-side to produce dynamic web page content before the page is sent to the user's web browser.

Express.js, or simply Express, is a web application framework for Node.js. It is designed for building web applications and APIs. It has been called the de facto standard server framework for Node.js. Express runs between the server created by Node.js and the frontend pages of a web application. Express also handles an application's routing.

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