JavaScript has been a fundamental part of our everyday lives for quite some time now, simply because it’s one of the essential pillars of most websites (along with HTML and CSS). Through JavaScript, web pages can dynamically apply changes to styles, animate menus, validate data entered into a form without refreshing, and much more. Javascript also works for web and mobile app development, as well as server applications and games. 

JavaScript (), often abbreviated as JS, is a programming language that conforms to the ECMAScript specification. JavaScript is high-level, often just-in-time compiled, and multi-paradigm.