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The JS Key Tester on FunnyFunHouse is completely free, runs entirely in your browser, and requires no downloads or sign-ups. Test keyboard events in real-time. View keyCode, key, code, which, charCode, and all event properties. Essential debugging tool for JavaScript developers
What It Does
Whether you are a beginner or a power user, the clean interface makes it easy to get started right away. Everything runs locally in your browser, so your data stays private and the tool loads instantly.
Key Features
- Display keyCode, key, and code properties
- Show modifier key states
- Event type detection (keydown, keyup, keypress)
- Visual key highlighting
- Event property comparison
- Copy event data to clipboard
Common Use Cases
- Debugging keyboard event handlers
- Learning JavaScript keyboard API
- Testing keyboard layouts and mappings
- Identifying key codes for shortcuts
How to Get Started
Getting started is simple:
- Open the JS Key Tester page
- The tool is ready to use immediately - no setup required
- Your settings and data are saved locally in your browser
- Come back anytime and pick up where you left off
Why Choose a Browser-Based Tool?
Unlike installable apps, the JS Key Tester runs entirely in your browser. This means:
- No installation - works on any device with a web browser
- No accounts - no sign-up or login required
- Private - your data never leaves your device
- Always up to date - no manual updates needed
- Free forever - no premium tiers or hidden costs
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