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javascript-mastery

authentic

33+ essential JavaScript concepts every developer should know, inspired by [33-js-concepts](https://github.com/leonardomso/33-js-concepts).

When to use

• Explaining JavaScript concepts
• Debugging tricky JS behavior
• Teaching JavaScript fundamentals
• Reviewing code for JS best practices
• Understanding language quirks

When not to use

• Use this skill only when the task clearly matches the scope described above.
• Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
• Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.

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