How do I install the Javascript UI Math skill?

Run npx skillmds@latest add hashgraph-online/javascript-ui-math in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Javascript UI Math safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: makes network calls. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Javascript UI Math?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Javascript UI Math free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Javascript UI Math?

hashgraph-online (@hashgraph-online) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Javascript UI Math by hashgraph-online

Name: Javascript UI Math
Rating: 4.2 (5 reviews)
Author: hashgraph-online

Javascript UI Math

Use 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.

hashgraph-online aad9bed 10 files · 16.2 KB Updated Sep 8, 2026

File contents

JavaScript UI Math

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.md to select the smallest relevant file set.
Load references/ui-numbers/rules.md for implementation decisions.
Load references/ui-numbers/examples.md when editing code.
Use workflows/debug-ui-number-logic.md for multi-step derivation or debugging.

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.

Source: hashgraph-online/awesome-codex-plugins → plugins/LVTD-LLC/skills/skills/javascript-ui-math/SKILL.md

---name: javascript-ui-mathdescription: Use 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.---# JavaScript UI MathUse 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 Start1. Read `guidelines.md` to select the smallest relevant file set.2. Load `references/ui-numbers/rules.md` for implementation decisions.3. Load `references/ui-numbers/examples.md` when editing code.4. Use `workflows/debug-ui-number-logic.md` for 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 |## SourceDerived from *Math for Web Design* by Paul McFedries, Chapter 2: Math basics for JavaScript.Citations are tracked in `references/source-map.md`.---**Source:** [`hashgraph-online/awesome-codex-plugins`](https://github.com/hashgraph-online/awesome-codex-plugins) → `plugins/LVTD-LLC/skills/skills/javascript-ui-math/SKILL.md`

Frequently asked questions