Directional key diagnostic

Arrow Keys Test

Verify Up, Down, Left, and Right individually, inspect simultaneous holds, then use a short sequence to confirm the browser differentiates every direction.

Direction history remains temporary and local.

Four-direction test

Test every arrow direction

Focus the directional pad, then press each physical arrow key. Page scrolling is suppressed only while this test surface has focus.

↑Up

→Right

↓Down

←Left

UpNot tested0 completed presses

RightNot tested0 completed presses

DownNot tested0 completed presses

LeftNot tested0 completed presses

Currently detectedNoneLast arrow: —

Optional sequence

↑ → ↓ ←

Progress: 0 / 4. Next expected: Up.

Continue with the expected directionAn untested direction is not classified as failed.

Four separate positions

How to test all four arrow keys

Focus the directional pad and press each arrow normally. The sequence ↑ → ↓ ← adds a differentiation check: an incorrect direction remains a valid detected key, but it does not advance the sequence.

One direction is not detected

Retry it, compare another browser, and use the main test to see whether nearby keys produce events. An unobserved key is not automatically failed.

Arrows work here but not in a game

Inspect the game's bindings, input mode, focus, and remapping utilities. Some games map movement to WASD instead of arrow codes.

Input context matters

Why arrow behavior can differ

WASD and arrows are different codes

ArrowUp is physically distinct from KeyW. Software can bind either group independently.

Laptop Fn layers

Compact laptops may share arrow positions with other functions. Firmware or an Fn layer can change which event reaches the browser.

Scrolling behavior

Arrow keys normally scroll pages. Default scrolling is prevented only while the focused arrow test surface is active, never on links or normal controls.

Combinations vary

The live combination display reports what reached this page. It does not claim every keyboard must support every opposing or diagonal combination.

Browser limits and privacy

Observed direction is not hardware certification

Operating-system shortcuts, accessibility tools, remote sessions, remapping, and focus can affect arrow events. Current holds, tested directions, counts, and sequence progress stay in memory and clear on reset or reload.

Example interpretations

Examples of arrow-key observations

These examples explain possible outcomes. They are not results from your current session.

Normal direction check

Observed: All four physical arrow codes appear and the guided sequence advances in order.
May mean: The browser differentiated the four directions in this session.
Does not prove: That every game, shortcut, or multi-key combination accepts them.
Next step: Test the binding in the application where arrow input matters.

One direction unobserved

Observed: Three directions appear, but one produces no matching browser event after normal retries.
May mean: That position needs comparison in another browser or application.
Does not prove: Physical keyboard failure.
Next step: Compare nearby keys, remapping, Fn-layer behavior, and another environment.

Wrong sequence input

Observed: A valid arrow event appears, but it is not the direction currently requested by the sequence.
May mean: The key was detected while the differentiation challenge remains incomplete.
Does not prove: A failed or swapped physical key by itself.
Next step: Repeat the requested direction and check layout or remapping if the mismatch continues.