JavaScript
JavaScript is an object-oriented programming language employed by most websites along with HTML and CSS to create robust, dynamic and interactive user experiences. The JavaScript programming language was introduced in 1995 and has since become one of the most popular with support by all major web browsers. JavaScript programs are used both client-side and server-side to add functionality to web sites. A 2016 Stack Overflow developer survey listed JavaScript as the most popular front end and back end development technology