Building Full-Stack Web Applications With Node.js and React/

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Express Route Handlers

Express Route Handlers

Let’s look at the details of routing so that we can practice.

We'll cover the following...

In the previous lesson, we wrote the minimum code necessary to run the server and then accessed it through the browser.

Routes

Every application is usually divided into a bunch of routes. Any page or request we invoke on a website is hitting a specific route on the back-end server. Routes determine how each endpoint should be treated and what logic gets executed.

Each HTTP request type is mapped to a routing method in Express with the syntax app.method(path, callback).

Route methods

The path defines the endpoint or the route path, for example, the / root endpoint. After defining the endpoint, we then perform the matched callback function. Here’s a list of the most common route methods:

  • The get request handler is used to retrieve resources from the server.
  • The put request handleris used for creating and updating the data in the server.
  • The post request handler is used to create and update the data in the server. The basic difference between putand post methods is that post is used to
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