A CSS pseudo-class is a keyword added to a selector that specifies a special state of the selected element(s). For example, :hover can be used to change a button's color when the user's pointer hovers over it.
REPL in Node JS
The repl module provides a Read-Eval-Print-Loop (REPL) implementation that is available both as a standalone program or includible in other applications. It can be accessed using: const repl = require('repl');
OS Module in Node JS
The os module provides operating system-related utility methods and properties. It can be accessed using: const os = require('os');
Cluster Module in Node JS
The cluster module provides a way of creating child processes that runs simultaneously and share the same server port.
Web APIs - Introduction
In computer programming, an application programming interface (API) is a set of subroutine definitions, protocols, and tools for building software and applications.
Cookies let you store user information in web pages.When a browser requests a web page from a server, cookies belonging to the page are added to the request. This way the server gets the necessary data to "remember" information about users.
Introduction to AJAX
Introduction to React Native
ECMAScript 2015 - ES6
ECMAScript 2009 - ES5