JavaScript UI Math
SkillDev toolsUse JavaScript number math safely for front-end UI behavior, including expressions, precedence, coercion, NaN, Infinity, floating-point precision, BigInt limits, modulo wrapping, rounding, random values, and repeatable UI randomness. Use when building sliders, carousels, counters, animation values, randomized UI, financial-ish display values, or debugging numeric edge cases in browser JavaScript.
Use JavaScript UI Math in Claude, ChatGPT or Ahel Desktop
Free. Sign in, add JavaScript UI Math and connect your AI. About a minute.
Also: Claude Code · Cursor · Codex
Then ask your AI: use the JavaScript UI Math skill
Details
Instructions available. Your AI can read the instructions. Execution depends on the setup they require.
Account requirements not reviewed. Check the skill instructions before use; Ahel provides instructions and does not run this skill.
No other account needed.
Add Ahel to your AI once: Claude, ChatGPT, Cursor, Claude Code or Codex. Then ask it to use this.
What this skill tells your AI
The instructions your AI receives, as published by hashgraph-online/awesome-codex-plugins in plugins/LVTD-LLC/skills/skills/javascript-ui-math/SKILL.md and read by Ahel’s review.
Use this skill for numeric browser behavior that needs predictable edge-case handling. It helps avoid common JavaScript traps around coercion, precision, modulo behavior, rounding, randomization, and BigInt.
Quick Start
- Read
guidelines.mdto select the smallest relevant file set. - Load
references/ui-numbers/rules.mdfor implementation decisions. - Load
references/ui-numbers/examples.mdwhen editing code. - Use
workflows/debug-ui-number-logic.mdfor multi-step derivation or debugging.
Contents
| Resource | Purpose |
|---|---|
guidelines.md | Routes tasks to the right reference files |
references/source-map.md | Book source and chapter/section traceability |
references/ui-numbers/knowledge.md | Core concepts and terminology |
references/ui-numbers/rules.md | Practical rules, guidelines, and exceptions |
references/ui-numbers/examples.md | Bad/good examples and refactoring approach |
references/ui-numbers/patterns.md | Reusable formula and implementation patterns |
references/ui-numbers/checklist.md | Review checklist and red flags |
workflows/debug-ui-number-logic.md | Step-by-step workflow |
Source
Derived from Math for Web Design by Paul McFedries, Chapter 2: Math basics for JavaScript.
Citations are tracked in references/source-map.md.
Signals
- GitHub stars
- 1k
- Forks
- 316
- Last commit
- Oct 2026
Advanced
- Item type
- skill
- Key
javascript-ui-math- Source
- github.com/hashgraph-online/awesome-codex-plugins
github.com/hashgraph-online/awesome-codex-plugins