AI Skill for JavaScript
$29.00
Sale price
$29.00
Regular price
Skip to product information
Start All-Access
AI Skill for JavaScript
$29.00
this skill
vs
$100+/hr
hiring a senior JavaScript developer
Complete skill package instant downloadai-skill-for-javascript.txt
Choose how to get it
Start All-Access, from $8.25/mo$99 a year, or $19 a month. 14-day refund on the first charge.
// all-access
You do not download skills. Your AI fetches them.
The KissMySkills connector is a small server your AI chat talks to. Add it once to Claude, ChatGPT, Claude Code or Cursor. From then on, any of our 1,000+ skills is one sentence away.
- 01Add the connector. Settings, Connectors, paste one link. A minute.
- 02Sign in once. The email from your subscription. Nothing installs.
- 03Ask for a skill. "Load AI Skill for JavaScript." It arrives in the conversation and your AI answers as that specialist.
$99/yr $8.25 a month
$19/mo month to month
Every skill, prompt pack and agent, new releases included. Single files can still be bought and kept. Cancel any time from your account. Compare plans
Secure checkout by Shopify
⚡ Instant download
∞ Keep forever
✎ Written by us
Add it once. Your AI works like a specialist.
Add it to Claude, ChatGPT or Gemini - your AI works as a specialist in this field.
Instant download · 30-day money-back guarantee. Pay once, keep forever - no subscription. Written and tested by us, never scraped from GitHub. Refund policy
Ask it something hard.
My loop fetches 20 user profiles one after another and takes 8 seconds. Node 20, ESM. How do I speed it up?
CLAUDE · WITH THIS SKILL
You get: the cause in one line (awaits inside the loop run sequentially) -> a runnable ESM function that fires all fetches and awaits them with Promise.allSettled -> per-request error handling that keeps the successful profiles -> a one-line why on allSettled vs all -> a note on capping concurrency if the API rate-limits -> the single next action: swap the loop in and compare timings with console.time.
Questions before you buy?
Write to us and a person answers - usually the same day. Not a bot, not a ticket queue.
hello@kissmyskills.comTrademarks of their respective owners. KissMySkills is not affiliated with or endorsed by them.
You don't read it. Your AI does.
Add the skill file to Claude, ChatGPT or Gemini once. From then on it works as a specialist in this field, starting with the very next message.
Buy once and the file is yours to keep forever. Or subscribe to All-Access and let the KissMySkills connector load it, and every other skill, into your chat on request.
// what's inside
What's inside this skill
- Runnable ESM or CommonJS code with stated runtime assumptions
- Async rewrites with Promise.all, allSettled and AbortController
- Error diagnosis with DevTools steps and the minimal fix
- Jest or Vitest tests and package.json or bundler config repairs
Frontend, full-stack and Node.js developers who write and debug JavaScript every day.
// what's inside
What you're actually buying
This Claude/ChatGPT skill is a JavaScript AI pair programmer inside your daily coding work: it writes runnable functions, modules and Node scripts for the runtime you name, rewrites slow sequential awaits into Promise.all flows, reviews pasted code for async mistakes and XSS risks, diagnoses errors like "Cannot read properties of undefined" or ESM vs CommonJS conflicts, and writes Jest or Vitest tests with mocks and fake timers.
It knows the event loop, closures and this binding, ES modules, browser APIs, Node.js core modules, npm and bundlers like Vite and esbuild, plus how to confirm a cause in DevTools. It is a helper in your JavaScript work, not a job-role persona, and it does not run or deploy code itself; it hands you the code and the command to verify it.
Works the same way in Claude, ChatGPT and Gemini. One purchase, download the file, install it in under 2 minutes, then paste your snippet or error and get a fix with the reasoning.
# AI Skill for JavaScript KissMySkills.com | Install: paste this whole file into Claude Projects (Project instructions), a custom GPT (Instructions), a Gemini Gem, or your AI's system prompt. Then just ask questions the way you normally would. ## Who you are You are a senior JavaScript pair programmer sitting next to the user while they write, debug and ship JavaScript in the browser and in Node.js. You know the language and its quirks, the runtimes, the package ecosystem and the tooling, and you hand over code that runs, reviews that find real bugs, and explanations that make the event loop click. You are the helper inside the user's JavaScript work, not a job-role persona. Tone: direct, practical, code first. ## What you know about JavaScript - Language: let and const scoping, closures, prototypes and classes, this binding, arrow functions, destructuring, spread and rest, optional ch
Sample from the actual file you'll download.
// how to install
Under 2 minutes
Four steps. Any AI chat.
- 01Download the file
After checkout, the download link lands in your inbox. Save the file anywhere on your device.
- 02Open your AI chat
Claude, ChatGPT, Gemini, Grok, or Copilot - whichever one you already use.
- 03Paste the file contents
Drop it into the system prompt, Project instructions, or custom instructions field.
- 04Start working
Your AI is now configured as a specialist. Ask it anything inside its domain.
No technical knowledge required. No subscription. Pay once, keep forever.
// compatible with
Works with every major AI chat.
Drop the file into your AI's system prompt, Project instructions, or custom instructions. No setup. No code. No vendor lock-in.
// faq
Questions about this product
What does the AI Skill for JavaScript do?+
It turns Claude or ChatGPT into a JavaScript AI pair programmer that writes runnable code for browser and Node.js, fixes async and module problems, reviews your JavaScript for bugs and security issues, and writes Jest or Vitest tests.
Does it run or deploy my JavaScript for me?+
No. It does not execute anything. It gives you the JavaScript code, the config change or the DevTools steps, and tells you what to run to verify the result yourself.
Does it cover Node.js as well as browser JavaScript?+
Yes. It asks which runtime you target (browser, Node.js version, Deno or Bun) and which module system you use, then writes JavaScript that fits: fs and streams on Node, DOM and fetch in the browser.
Can it work with React, Vue or Express code?+
Yes, when you name the framework. It keeps plain JavaScript separate from framework patterns so you get idiomatic code for React, Vue, Svelte, Express or Fastify rather than a mix.
Which AI tools does this skill work with?+
Works with Claude (recommended), Claude Code, ChatGPT, Gemini and Copilot, and any AI chat that accepts system prompts. Claude Projects gives the best results because it remembers your JavaScript runtime, framework and lint rules between chats.
Do I have to read it myself?+
No. The file is written for your AI to read, not for you. Upload it or paste it in once and the AI takes on the role. After that you just ask it questions the way you normally would. You're welcome to open it and read it, but nothing here depends on you doing that.
Is this a physical book?+
No, it's digital. You download it the moment the order goes through and it's yours permanently. The cover is styled like a book because each edition is written and edited as one self-contained piece of work. The reading part is your AI's job, not yours.
Ready to specialise your AI?
One drop-in file. Pay once, keep forever - works with Claude & ChatGPT.
