About the Keyboard Event Keycode Tester
A diagnostic tool for capturing keyboard events. Press any key on your keyboard to instantly see its key, code, and legacy keycode values.
How to Use
- 1
Click on the capture field to activate key logging.
- 2
Press any key or key combination on your keyboard.
- 3
Review the key information card showing key, code, and keycode.
- 4
Examine modifier states (Ctrl, Shift, Alt, Meta).
Key Features
- Captures keydown and keyup event states in real-time
- Displays event.key, event.code, and event.which
- Identifies modifier key statuses
- Prevents default browser events (like F5 refresh) during capture
- Clean, developer-focused layout
Frequently Asked Questions
What is the difference between key and code?
event.key returns the character generated by the keypress (influenced by keyboard layout). event.code returns the physical key pressed on the keyboard (independent of layout).
Why are keycode numbers deprecated?
Legacy keycode values (like 13 for Enter) have been deprecated in modern web standards because they are inconsistent across different operating systems and keyboards. Modern applications use event.key and event.code instead.