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getify/You-Dont-Know-JS

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cached 2026-03-29T22:04:06.535Z

3mo ago

getify/You-Dont-Know-JS

A large, very popular repository for the second edition of the "You Don't Know JS Yet" JavaScript book series. It is complete, read-only, and intended for free online reading plus published/bookstore sales; the maintainers explicitly say it is not open to further contributions. Forks are mainly interesting if you want to adapt, mirror, translate, or study a well-known JS book source, not if you want an active upstream project.

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Stars184,546

Forks33,608

Default branch2nd-ed

Last pushed2026-02-15T04:36:44Z

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Prefer this fork only if you specifically want the translated/localized content. If you want the latest English source or an actively maintained book repository, upstream is the better choice.

Choose this fork if you want the YDKJS material in Spanish and are comfortable with a translation-focused, low-activity repository. Choose upstream if you need the freshest canonical source or active maintenance.

Prefer this fork only if you specifically want a localized, independently maintained derivative of the JS book series. If you want the canonical, current upstream text and structure, upstream is the better choice.

Choose this fork if your goal is Chinese-language access or a translation base. Do not choose it if you want a current, upstream-aligned copy of the completed second-edition project; it is materially diverged and stale.

Choose this fork only if you want a static, customized mirror of the book series. If you want the current canonical content, active publishing updates, or anything close to upstream, the original repository is the better choice.

Choose the upstream repo if you want the current canonical book source. Choose this fork only if you specifically want an older, legacy layout or a historical snapshot and do not need ongoing updates.

Fork comparison

JoeHetfield/You-Dont-Know-JS

38/100

stale

significant_divergence

Prefer this fork only if you specifically want the translated/localized content. If you want the latest English source or an actively maintained book repository, upstream is the better choice.

Likely purpose

To provide a translated/adapted version of the JavaScript book series for readers who want Chinese-language access and a snapshot of the project as it existed years earlier.

Best for

Chinese-speaking JavaScript learners.; People maintaining or studying a translated documentation/book fork.; Users who want a static archival copy rather than an up-to-date upstream mirror.

Additional features

Chinese translation and localization of multiple chapters and sections.
Regionalized wording/spacing fixes for Chinese-English text.
Extra translated or adapted content structure, including translated book chapters and related supporting pages.
Adds performance-oriented execution paths, caching, or faster runtime modes.

Missing features

Falls far behind upstream, missing 240 upstream commits and later book-status/publishing updates.
Does not reflect upstream's current second-edition completion state and recent editorial changes.
Uses an older `master` branch layout instead of upstream's current `2nd-ed` branch structure.
It trails upstream by 240 commits, so some recent upstream features and fixes are likely not present yet.

Strengths

Useful if you want a Chinese version of the material.
Potentially easier to study as a frozen translation snapshot.
Large divergence suggests the fork is self-contained rather than dependent on upstream churn.

Risks

Content may be outdated relative to the current upstream edition.
Readers may miss newer corrections, publishing notes, and repository organization changes.
The fork appears inactive, so maintenance and consistency are likely poor.

getify/You-Dont-Know-JS · Discofork