Why is event.keyCode deprecated in modern JS?

Modern web specifications recommend using event.key and event.code because event.keyCode was inconsistent across different operating systems and non-QWERTY international keyboard layouts.

Is my data safe when using the KeyCode Info?

Yes. All computations, parsing, and transformations occur locally inside your browser via client-side JavaScript. No input data is sent to external servers.

Is the KeyCode Info completely free?

Yes. QuizOxa Tools is 100% free with no subscription, account creation, or rate limits required.

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Developer Client-Side

Free Online JavaScript KeyCode Event Checker & Info

Interactive JavaScript keyboard event inspector. Press any key on your keyboard to instantly see its numeric keyCode, event.key, event.code, modifier states (Ctrl, Alt, Shift, Meta), and copy ready-to-use JavaScript event listener snippets.

100% In-Browser Privacy Instant Zero-Lag Execution Zero Data Uploaded

Press any key on your keyboard

Key: Space

event.keySpace

event.codeSpace

event.which32

event.locationStandard (0)

Active Modifiers:CtrlShiftAltMeta / Cmd

JavaScript Event Listener Code

// JavaScript Keyboard Event Listener
window.addEventListener('keydown', (event) => {
  if (event.code === 'Space' || event.key === 'Space') {
    console.log('Key pressed:', event.key, 'Code:', event.code, 'KeyCode:', event.keyCode);
  }
});

How to Use KeyCode Info

Input Your Data

Paste or type your input into the workspace above, or upload a target file directly.

Configure Settings

Select desired formatting options, conversion rules, or target units suited for your project.

Instant Processing

Execution completes in milliseconds right inside your browser memory with zero network latency.

Export & Copy

Use one-click copy to move the processed output to your clipboard or download files locally.

Key Highlights & Privacy Guarantee

Zero Server Storage

Your data is processed strictly in client-side RAM using WebAssembly and standard JavaScript APIs. No data packets or credentials are sent to our backend.

High-Speed Execution

By removing server round-trips, transformations occur in under a millisecond, optimizing Core Web Vitals and eliminating processing queues.

Free with Zero Limits

No subscription tiers, no hidden credit systems, and no registration walls. Run unlimited conversions and utilities whenever needed.

Frequently Asked Questions

event.key represents the character or value produced by the keypress (e.g. 'a', 'A', 'Enter'). event.code represents the physical key location on the keyboard (e.g. 'KeyA', 'Enter') regardless of keyboard layout.