It can be used in the front-end and run on the client-side/browser or in the back-end with node.js. The most popular ones are React (and Next.js its sub-framework), Vue (and Nuxt.js its sub-framework), and Angular. With time, many frameworks have been developed to improve the functionalities and development of JS. It defines language lexicon & syntax and the APIs that should be made available in it. It is the scripting language specification it’s based on. JavaScript is also multi-paradigm so that you can write your code in a variety of ways, like object-oriented or functional.īehind JavaScript exist a convention called ECMAScript. Interpreted means that you don’t need to run it through a compiler, and the language can be directly executed by your computer’s processor. High-level means that a lot of abstraction is made, so you don’t have to deal with memory management as you would with low-level languages like C or C++. It’s a high-level, interpreted language just like Python. Trigger pop-ups/offers after user actions It lets you do things like:Īuto-update content, like a social media feed

However, JavaScript is more complex than the first two. While HTML takes care of the content and structure of a page and CSS of the style, JS is used on the client-side for the behavior of a page-it makes it come to life.

JavaScript (not to be confused with Java) scripting programming language that appeared in 1995 and is at the core of the modern World Wide Web.

Js full course