Keypress Tester & Keyboard Event Viewer

Press any key to inspect event.key, event.code, keyCode, modifiers, keydown or keyup data, and a copyable event history.

Live Keypress Tester & Keyboard Event Viewer

Choose which browser event to capture, press a key, and inspect the complete KeyboardEvent data. Your last eight events stay in a local history for quick comparisons.

Capture

Current key

Waiting…

Press any key to capture keydown

event.type

—

keydown or keyup

event.key

—

Character or named key

event.code

—

Physical keyboard position

event.keyCode

—

Deprecated numeric value

event.which

—

Legacy numeric alias

event.location

—

Standard, left, right, or numpad

event.repeat

—

True while a key is held

Modifier keys

—

Shift, Ctrl, Alt, and Meta

Recent Events

Latest 8 events
TypeKeyCodeModifiersRepeat
Press a key to populate the event history.

Focused Keyboard Tools

Diagnose a specific input problem or learn how browser keyboard events work.

Keypress Detector

Confirm whether the browser receives a key and identify its exact values.

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KeyCode Tester

Compare deprecated numeric keyCode values with event.key and event.code.

Open tool →

JavaScript Keyboard Events

Learn when to use keydown, keyup, event.key, and event.code.

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Keyboard Event Debugging

Use a repeatable workflow to diagnose shortcuts and browser keyboard input.

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Test a Specific Keyboard Key

Open a dedicated reference for expected event.key, event.code, and keyCode values.

Understanding KeyboardEvent Values

event.key describes the character or named key produced by the input. Use it when the meaning of the key matters, such as Enter, Escape, or a typed letter.

event.code describes the physical keyboard position. It is useful for layout-independent controls such as games. event.keyCode and event.which are deprecated numeric values shown here for debugging older code.

The live viewer also exposes event type, location, repeat status, and modifier keys. Switch between keydown and keyup, compare recent events, or copy the current snapshot as JSON.

Read the keyboard event guides