Set of rules defining correctly structured programs
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A snippet of JavaScript code with keywords highlighted in different colors
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). Given that JavaScript is mainly used for client-side scripting within modern web browsers, and that almost all Web browsers provide the alert function, alert can also be used, but is not commonly used.
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...
JSON (JavaScript Object Notation, pronounced /ˈdʒeɪsən/ or /ˈdʒeɪˌsɒn/) is an open standard file format and data interchange format that uses human-readable...
to JavaScript. It is designed for the development of large applications and transpiles to JavaScript. Because TypeScript is a superset of JavaScript, all...
or other runtime system provides JavaScript APIs for I/O. Although Java and JavaScript are similar in name, syntax, and respective standard libraries...
CoffeeScript into the modern JavaScript era, closing gaps in compatibility with JavaScript while preserving the clean syntax that is CoffeeScript's hallmark"...
An abstract syntax tree (AST) is a data structure used in computer science to represent the structure of a program or code snippet. It is a tree representation...
Syntax highlighting is a feature of text editors that is used for programming, scripting, or markup languages, such as HTML. The feature displays text...
100 languages) under that name (is syntax compatible with Python 2.7, now an outdated Python version). JavaScript (6th), PHP, R and others, also make...
communication in web applications. JSON is based on JavaScriptsyntax, but is independent of JavaScript and supported in many other programming languages...
174: Project Nashorn, a JavaScript runtime which can run JavaScript code embedded within applications JEP 104: Annotation on Java types Unsigned integer...
Exception handling syntax is the set of keywords and/or structures provided by a computer programming language to allow exception handling, which separates...
JavaScript error. <script type="application/javascript" src="http://server.example.com/Users/1234"> </script> The browser will download the <script>...
ECMAScript is a JavaScript standard developed by Ecma International. Since 2015, major versions have been published every June. ECMAScript 2023, the 14th...
language) – Syntax extension and toolchain for OCaml JS++ – Web programming language TypeScript – Programming language and superset of JavaScript "purescript/purescript"...
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