The followingoutline is provided as an overview of and topical guide to #"/wiki/JavaScript" title="JavaScript">JavaScript (JS) is aprogramming language and core technology ofthe Web, alongsideHTML andCSS. It was created byBrendan Eich in 1995. As of 2025, the overwhelming majority ofwebsites (98.9%) uses JavaScript on theclient side forwebpage behavior.
Programming language — artificial language designed to communicate instructions to a machine, particularly a computer.
High-level programming language — a programming language with strong abstraction from the details of the computer, such as having words, making it closer to natural language and easier to use than low level programming languages (which are much more cryptic).
Compiled language — source code is converted ("compiled") to an intermediate form in order to be run.
Dynamic programming language — allows various operations to be determined and executed at runtime, such as declaring data types, unlike in static languages, where the structure and types are fixed during compilation.
Multi-paradigm programming language — A programming paradigm is a relatively high-level way to conceptualize and structure the implementation of a computer program. JavaScript supports many paradigms.
Scripting language — programming language that is used for scripting, which is the act of writing a script, which is a relatively short and simple set of instructions which automate an otherwise manual process.
Event-driven programming language — the flow of programs is determined by external events, such as inputs from mice, keyboards, touchpads and touchscreens, and external sensors.
Object-oriented programming language — organized asobjects that contain both data structure and associated behavior, uses data structures consisting of data fields and methods together with their interactions (objects) to design programs
Prototype-based programming language — includes object-oriented programming that avoids classes and implements inheritance via cloning of instances
Declarative programming language — its code declares properties of the desired result, but not how to compute it, describes what computation should perform, without specifying detailed state changes
Functional programming language — a desired result is declared as the value of a series of function evaluations, uses evaluation of mathematical functions and avoids state and mutable data
MDN Web Docs - JavaScript – The official and most authoritative JavaScript documentation by Mozilla, including tutorials, references, and examples for all levels.
Eloquent JavaScript - Online Book – Highly regarded free book by Marijn Haverbeke that introduces JavaScript concepts through engaging examples and exercises.
The Modern JavaScript Tutorial – A comprehensive and interactive guide covering modern JavaScript, from basics to advanced topics, maintained and continuously updated by the community.
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