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ECMAScript ( / ˈɛkməskrɪpt /; ES) [1] is a standard for scripting languages, including JavaScript, JScript, and ActionScript. It is best known as a JavaScript standard intended to ensure the interoperability of web pages across different web browsers. [2] It is standardized by Ecma International in the document ECMA-262 .
ECMAScript version history. ECMAScript is a JavaScript standard developed by Ecma International. Since 2015, major versions have been published every June. ECMAScript 2023, the 14th and current version, was released in June 2023.
JavaScript ( / ˈdʒɑːvəskrɪpt / ), often abbreviated as JS, is a programming language and core technology of the Web, alongside HTML and CSS. 99% of websites use JavaScript on the client side for webpage behavior.
These are new generation ECMAScript engines for web browsers, all implementing just-in-time compilation (JIT) or variations of that idea. The performance benefits for just-in-time compilation make it much more suitable for web applications written in JavaScript .
JSX ( JavaScript XML, formally JavaScript Syntax eXtension) is an XML-like extension to the JavaScript language syntax. [1] Initially created by Facebook for use with React, JSX has been adopted by multiple web frameworks. [2] : 5 [3] : 11 Being a syntactic sugar, JSX is generally transpiled into nested JavaScript function calls structurally similar to the original JSX.
V8 (JavaScript engine) V8 is a JavaScript and WebAssembly engine developed by Google for its Chrome browser. [1] [4] V8 is free and open-source software that is part of the Chromium project and also used separately in non-browser contexts, notably the Node.js runtime system.
HTML is a markup language that defines the structure and presentation of web pages. It is one of the core technologies of the World Wide Web, along with CSS and JavaScript. HTML allows creating and formatting text, images, links, tables, forms, and other elements on a web page. Learn more about the history, syntax, and features of HTML on Wikipedia.
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 . The JavaScript standard library lacks an official standard text output function (with the exception of document.write ).