# The Modern JavaScript Tutorial

Modern JavaScript Tutorial

Repository: https://github.com/javascript-tutorial/en.javascript.info
Canonical: https://ross.abutalabs.com/products/the-modern-javascript-tutorial
Homepage: https://javascript.info
Language: HTML
License: NOASSERTION
License Family: other
Topics: english, javascript, tutorial
Last push: 2026-07-25T16:20:58+00:00
Link (homepage): https://javascript.info
Link (site_page): https://javascript.info/getting-started
Link (site_page): https://javascript.info/about

## Health v2 (maintenance only)
Score: 75/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 94, release rhythm 35, longevity 100
- inputs: {"age_days": 3378, "days_push": 39, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 25433, forks 3994 (observed 2026-08-28T04:11:38.157839+00:00)

## What it is
The Modern JavaScript Tutorial is an open-source, multi-language book-style tutorial covering JavaScript from basics to advanced topics, published at javascript.info. Content is maintained in GitHub repositories using an enhanced Markdown format with community contributions and translations.

## Use cases
- learn javascript from scratch
- study advanced javascript concepts like oop and closures
- find a free javascript book with exercises
- contribute to or translate a javascript tutorial
- prepare for javascript interviews with structured lessons

## When to choose
- you want a comprehensive, regularly updated written JavaScript course
- you prefer reading with tasks and solutions over video tutorials
- you need tutorial content in many languages

## When to avoid
- you need interactive in-browser coding courses with autograding
- you want framework-specific docs like React or Vue
- you prefer video-based learning

## Facets
- artifact type: learning-resource
- maturity: active
- function: documentation, developer-tools
- domain: programming-languages, web-development, tutorials, education
- platform: cross-platform
- tags: javascript, tutorial, open-source-content, translations, markdown, web-server

## Member repositories
- javascript-tutorial/en.javascript.info (main) score 75
- javascript-tutorial/zh.javascript.info (mirror) score 65
- javascript-tutorial/ko.javascript.info (mirror) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:38.157839+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T16:56:03.395406+00:00, confidence not recorded.
  - readme: https://github.com/javascript-tutorial/en.javascript.info (fetched 2026-08-28T04:11:38.157839+00:00, sha 029eb0c7015c)
  - homepage: https://javascript.info (fetched 2026-08-29T07:52:50.898860+00:00, sha 35e0aa545b62)
  - site_page: https://javascript.info/getting-started (fetched 2026-08-29T07:52:50.908477+00:00, sha ffbb8fba2b0a)
  - site_page: https://javascript.info/about (fetched 2026-08-29T07:52:50.910574+00:00, sha 64c329f86a70)
- Data as of 2026-08-30T08:39:29.467469+00:00.