Javascript Mastery
This is a solid reference implementation of the popular 33-js-concepts repo, covering everything from primitive types and type coercion to closures, the event loop, and functional programming patterns. You get concrete code examples for each concept, including the tricky stuff like hoisting, the this keyword, and how microtasks beat macrotasks in the event loop. It's structured as a teaching resource rather than an interactive tool, so think of it more like giving Claude a comprehensive JS cheat sheet to reference when explaining concepts or debugging. The examples are clear and show both correct patterns and common pitfalls. Useful if you're doing a lot of JS education, code review, or need Claude to explain why your equality comparison isn't working the way you expected.
- skills.sh installs
- 843
- GitHub stars
- 43.1K
- last updated
- Jul 14, 2026
Install
$ npx -y skills add sickn33/antigravity-awesome-skills --skill javascript-mastery --agent claude-codeInstalls into .claude/skills of the current project.
Files
🧠 JavaScript Mastery
33+ essential JavaScript concepts every developer should know, inspired by 33-js-concepts.
Detailed Guide
Read the detailed guide before executing this skill. It retains the complete procedure and reference material. Treat its safety, prerequisites, and validation requirements as mandatory. For focused work, load the relevant sections; for end-to-end work, read the guide completely.
When to Use This Skill
Use this skill when:
- Explaining JavaScript concepts
- Debugging tricky JS behavior
- Teaching JavaScript fundamentals
- Reviewing code for JS best practices
- Understanding language quirks
Limitations
- 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.
Sponsors
Agent CaffeineSponsoredClose your lid, come back to finished work
SnugSponsoredThe clipboard manager for the AI eraPromote your product hereReach 125k+ visitors monthly
WaxSponsoredBlock anything with supervision, without erasing your iPhonePromote your product hereReach 125k+ visitors monthly
knobsSponsoredSee your site on any phone, any day, in any languageDetails
- Repository
- github.com/sickn33/antigravity-awesome-skills
- First seen
- Apr 16, 2026
More from sickn33/antigravity-awesome-skills
All 708- Skill Creator838
- Stripe Integration835
- Agent Tool Builder826
- Database Architect826
- Api Design Principles824
- Planning With Files824
- Agent Evaluation815
- Agent Manager Skill814
- Bash Pro813
- Outlook Calendar Automation812
- Git Pushing810
- Codebase Cleanup Refactor Clean808
- Red Team Tactics808
- Claude Scientific Skills806
- Voice Ai Development804
- Code Reviewer796
- Architecture Patterns787
- Server Management782
- Quant Analyst775
- Data Scientist774
- Plan Writing772
- Voice Agents771
- Clerk Auth767
- Web Design Guidelines766
Recommended
cavemanjuliusbrussee/cavemanUltra-compressed communication mode. Cuts output tokens 65% (measured) by speaking like caveman while keeping full technical accuracy. Supports intensity levels618.3Kskills.sh installs
improveshadcn/improveSurvey any codebase as a senior advisor and produce prioritized, self-contained implementation plans for OTHER models/agents to execute. Strictly read-only on s40Kskills.sh installs
systematic-debuggingobra/superpowersUse when encountering any bug, test failure, or unexpected behavior, before proposing fixes326.7Kskills.sh installs
karpathy-guidelinesforrestchang/andrej-karpathy-skillsBehavioral guidelines to reduce common LLM coding mistakes through explicit assumptions, simplicity, and verifiable success criteria.17.9Kskills.sh installs
find-skillsvercel-labs/skillsHelps users discover and install agent skills when they ask questions like "how do I do X", "find a skill for X", "is there a skill that can...", or express int4.3Mskills.sh installs