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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.
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 ).
W3Schools is a freemium educational website for learning coding online. Initially released in 1998, it derives its name from the World Wide Web but is not affiliated with the W3 Consortium. W3Schools offers courses covering many aspects of web development. W3Schools also publishes free HTML templates. It is run by Refsnes Data in Norway.
JavaScript at Wikibooks. 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. [10] Web browsers have a dedicated JavaScript engine that executes the client code.
Defensive programming is an approach to improve software and source code, in terms of: General quality – reducing the number of software bugs and problems. Making the source code comprehensible – the source code should be readable and understandable so it is approved in a code audit. Making the software behave in a predictable manner ...
JSX (JavaScript) is a syntax extension for JavaScript that allows embedding XML-like elements in the code. It is mainly used with React, a popular library for building user interfaces. JSX is not a standard, but a transpiler can convert it to plain JavaScript. Learn more about the history, features, and usage of JSX on Wikipedia.
MySQL, Oracle, PostgreSQL, SQLite (WebSQL), SQLite (SQL.js) W3Schools: Free Yes No No Yes tutorials See also. List of compilers; Source-code editor;
License. MIT [3] Website. babeljs .io. Babel is a free and open-source JavaScript transcompiler that is mainly used to convert ECMAScript 2015+ (ES6+) code into backwards-compatible JavaScript code that can be run by older JavaScript engines. It allows web developers to take advantage of the newest features of the language.