JavaScript (/ ˈ dʒ ɑː v ə s k r ɪ p t / ⓘ), often abbreviated as JS, is a programming language and core technology of the World Wide Web, alongside HTML and CSS. Ninety-nine percent of websites use JavaScript on the client side for webpage behavior. [10] Web browsers have a dedicated JavaScript engine that executes the client code.

JavaScript is a high-level programming language that follows the ECMAScript standard. It was originally designed as a scripting language for websites but became widely adopted as a general-purpose programming language , and is currently the most popular programming language in use. [ 1 ]

Apr 3, 2025 · JavaScript (JS) is a lightweight interpreted (or just-in-time compiled) programming language with first-class functions. While it is most well-known as the scripting language for Web pages, many non-browser environments also use it, such as Node.js, Apache CouchDB and Adobe Acrobat.

A JavaScript engine is a software component that executes JavaScript code. The first JavaScript engines were mere interpreters , but all relevant modern engines use just-in-time compilation for improved performance. [ 1 ]

The syntax of JavaScript is the set of rules that define a correctly structured JavaScript program. The examples below make use of the log function of the console object present in most browsers for standard text output .

JavaScript（通常缩写为JS）是一门基于原型和头等函数的多范式高级 解释型 编程语言 [9] [10] ，它支持面向对象程式設計、指令式编程和函数式编程。 它提供方法来操控文本、 数组 、日期以及 正则表达式 等。

JavaScript (frequentemente abreviado como JS) é uma linguagem de programação interpretada estruturada, de script em alto nível com tipagem dinâmica fraca e multiparadigma (protótipos, orientado a objeto, imperativo e funcional). [2] [3] Juntamente com HTML e CSS, o JavaScript é uma das três principais tecnologias da World Wide Web ...

JavaScript е интерпретируем език за програмиране, разпространяван с повечето уеб браузъри. Поддържа обектно ориентиран и функционален стил на програмиране. Създаден е в Netscape през 1995 г.

A JavaScript programozási nyelv egy objektumorientált, prototípus-alapú szkriptnyelv, amelyet weboldalakon elterjedten használnak. Ebből fejlődött ki a TypeScript, ami a JavaScript típusos változatának tekinthető.

JavaScript) је динамичан, слабо типизиран и интерпретиран програмски језик високог нивоа. Стандардизован је по ЕКМАСкрипт спецификацији језика.