Tag: javascript

Middleware is a technique that allows software developers to make specific code run anytime an Express route is called. The middleware pattern makes it possible to execute code between a server receiving a request and sending a response. Hence the name Middleware, as it lives in the middle. Express uses middleware to apply behavior to request and response objects. Express middleware can do things like attach information to a response, inspect a request, pass a request and response to a different middleware, or perform some other logic.…

Express Routers are a way to organize your Express application such that your primary app.js file does not become bloated and difficult to reason about. As you’re building an Express application or API, you’ll soon notice that the routes continue to pile up in app.js. This makes the file quite long and hard to read. As we add functionality to an application, this file would get long and cumbersome.…

JavaScript is the language of the web and you are likely familiar with it running in all of your favorite web browsers. JavaScript also runs on the server via Node and in this tutorial, we’ll take a look at setting up routes in the popular Express framework. To start using Express, first, make sure Node is installed on your machine. You can check with the command node -v.…

Without fail, you are going to need to iterate or loop over data in your programs no matter the language. In JavaScript, we have several loop constructs to do this, as well as the so-called higher-order functions. These higher-order functions allow a more concise syntax to allow you to iterate over a collection while applying the logic of your choice to each item in the collection if you like.…