# mjavascript/practical-modern-javascript

🏊 Dive into ES6 and the future of JavaScript

Repository: https://github.com/mjavascript/practical-modern-javascript
Canonical: https://ross.abutalabs.com/products/practical-modern-javascript
Homepage: https://mjavascript.com
Language: XSLT
License: NOASSERTION
License Family: other
Topics: javascript, book, book-series, es6, modular
Last push: 2023-08-17T07:51:06+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 3653, "days_push": 1112, "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 3068, forks 243 (observed 2026-08-28T04:07:41.472523+00:00)

## What it is
Practical Modern JavaScript is the first book in the Modular JavaScript series, freely readable online in HTML form, covering ES6 language features and modular application development in depth. Its open-source repository contains book chapters, code samples, and graphics under a Creative Commons BY-NC-SA license.

## Use cases
- learn es6 javascript features in depth
- understand javascript module patterns
- read a free online book about modern javascript
- study real-world es6 use cases before migrating a codebase
- learn to break large javascript codebases into modules
- reference modern javascript syntax while coding

## When to choose
- you want a thorough, free, well-written guide to ES6 and modular JavaScript
- you prefer reading structured book-style material over scattered blog posts
- you are an intermediate JavaScript developer preparing to adopt modern language features

## When to avoid
- you need a quick API reference rather than long-form explanations
- you are looking for a runnable tool or library rather than reading material
- you need coverage of post-ES6 features only, since the book focuses on ES6

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: documentation, developer-tools
- domain: programming-languages, web-development, tutorials, education
- platform: -
- tags: book, es6, javascript, modularity, free-to-read, open-source-book, pony-foo, web, nodejs

## Member repositories
- mjavascript/practical-modern-javascript (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:41.472523+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 2026-08-30T07:28:10.662029+00:00, confidence not recorded.
  - readme: https://github.com/mjavascript/practical-modern-javascript (fetched 2026-08-28T04:07:41.472523+00:00, sha e576631e8d47)
  - homepage: https://mjavascript.com (fetched 2026-08-29T09:43:28.333672+00:00, sha d887eabec747)
- Data as of 2026-08-30T08:39:29.467469+00:00.