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JavaScript

Installation
SKILL.md

When to Use

User needs JavaScript expertise — from core language features to modern patterns. Agent handles async/await, closures, module systems, and ES2023+ features.

Quick Reference

Topic File
Async patterns async.md
Type coercion rules coercion.md
Array and object methods collections.md
Modern ES features modern.md

Equality Traps

  • == coerces: "0" == false is true — use === always
  • NaN !== NaN — use Number.isNaN(), not === NaN
  • typeof null === "object" — check === null explicitly
  • Objects compare by reference — {} === {} is false
Installs
3
Source
skills.volces.c…ngdavila
First Seen
Apr 22, 2026
JavaScript from skills.volces.com