JavaScript (), often abbreviated as JS , is a programming language
that is one of the core technologies of the World Wide Web, alongside HTML and
CSS. As of 2023, 98.7% of websites use JavaScript on the client side for
webpage behavior, often incorporating third-party libraries. All major web
browsers have a dedicated JavaScript engine to execute the code on users'
devices.
JavaScript is a high-level, often just-in-time compiled language that conforms
to the ECMAScript standard. It has dynamic typing, prototype-based object-
orientation, and first-class functions. It is multi-paradigm, supporting
event-driven, functional, and imperative programming styles.