JavaScript Guide - JavaScript | MDN
The JavaScript Guide shows you how to use JavaScript and gives an overview of the language. If you need exhaustive information about a language feature, have a look at the JavaScript reference.
Overview
Added
March 18, 2026
Subject & domain
coding · programming-languages-syntax
Grade range
Grade 8–Grade 12 (Senior)
Page kind
Article
Introduction
JavaScript Guide Overview
- Purpose: Provides a comprehensive introduction and overview of the JavaScript language for developers.
- Scope: Covers fundamental features, language mechanisms, and advanced concepts.
- Structure: The guide is organized into 19 core chapters, including:
- Foundations: Grammar, types, control flow, loops, and functions.
- Data Handling: Numbers, strings, dates, regular expressions, and collections (indexed/keyed).
- Advanced Concepts: Objects, classes, promises, iterators, generators, and modules.
- Specialized Topics: Typed arrays, resource management, and internationalization.
- Recommendation: Users seeking exhaustive technical specifications or deep-dive documentation should consult the separate "JavaScript reference" resource.
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