Routes

Here is a comprehensive review of the routing functionality provided by Express, a popular web framework for Node.js:

Defining routes In Express, you can define routes using the various routing methods provided by the framework, such as app.get(), app.post(), app.put(), app.delete(), etc. These methods take two arguments: a path and a callback function. The callback function will be executed when the specified path is requested using the corresponding HTTP method.

For example, the following code defines a route that responds to a GET request to the / path with a "Hello World" message:

app.get('/', (req, res) => {
  res.send('Hello World');
});

Route parameters

You can include parameters in your routes by using a colon followed by the parameter name. For example:

app.get('/users/:id', (req, res) => {
  const { id } = req.params;
  res.send(`User ID: ${id}`);
});

In this case, the id parameter will be extracted from the request parameters and sent as part of the response.

Route middleware

You can use route middleware to add functionality to your routes. Route middleware is a function that is executed before the route callback function. It can be used to perform tasks such as authentication, authorization,