GStars
    leonardomso

    leonardomso/33-js-concepts

    📜 33 JavaScript concepts every developer should know.

    frontend
    backend
    angular
    concepts
    es6
    es6-javascript
    hacktoberfest
    JavaScript
    MIT
    66.5K stars
    9.1K forks
    66.5K GitHub watchers
    Updated Nov 1, 2026
    View on GitHub

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    Where it stands

    Rank, growth pace and release cadence relative to everything GStars tracks.

    The project lists 199 contributors on GitHub.

    Peaked at #53 in the weekly ranking the week of Oct 5, its best in the past year.

    Use Cases & Benefits

    • A learning resource that explains 33 fundamental JavaScript concepts every developer should know to master the language.
    • Provides clear, concise explanations and curated references for core JavaScript topics, enhancing understanding beyond basic syntax.
    • Use for developers seeking to deepen their JavaScript knowledge with foundational concepts like closures, scopes, and event loops.
    • Use for educators or trainers designing JavaScript curriculum or workshops with structured, essential topics.
    • Use for programmers preparing for interviews or improving code quality by understanding JavaScript internals and best practices.

    Should you depend on it?

    License terms, project hygiene and risks, from GitHub metadata and GStars' snapshots.

    License

    MIT

    Permissive: commercial use, modification and redistribution are allowed with attribution.

    Community files

    • README: present
    • Contributing guide: present
    • Code of conduct: present

    Watch-outs

    • No GitHub releases; pin a commit or tag instead of a release.

    General guidance from repository metadata, not legal advice. How we score

    From the README

    🚀 Considered by GitHub as one of the top open source projects of 2018!

    This repository was created with the intention of helping developers master their concepts in JavaScript. It is not a requirement, but a guide for future studies. It is based on an article written by Stephen Curtis and you can read it here.

    Excerpt from the leonardomso/33-js-concepts README on GitHub (MIT license). © its authors.Read the full README on GitHub

    Daily snapshots

    Stars gained per day, and how forks and open issues moved, from GStars' daily snapshots

    Forks

    9.1K-12

    Open issues

    10+7

    Compared with peers in Frontend

    Fastest-growing repositories GStars tracks in this cohort for the week of Nov 8, by 7-day star growth

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