Mouse Button Test

Check each semantic mouse button role, including Back/X1 and Forward/X2.

Listening for button input

Press each mouse button inside the test area.

Primary is usually left, Secondary usually right; Back/Forward are also known as X1/X2.

Detected button input

PrimaryNot yet detected0

MiddleNot yet detected0

SecondaryNot yet detected0

Back / X1Not yet detected0

Forward / X2Not yet detected0

Inside this test area, normal browser actions for tested buttons — including X1/X2 Back/Forward navigation — are suppressed when the browser exposes those events. Outside the area, normal button behavior is unchanged. If X1/X2 stay undetected, the browser, OS, or mouse software may not expose them to the page; that is not automatically a hardware failure.

How to test mouse buttons

Press each button inside the test area. Held highlighting shows the current browser state and the counter records observed button-down events. Primary is usually the left button and Secondary usually the right, but OS remapping can change those semantic roles.

Middle and side buttons

Back/X1 and Forward/X2 are additional browser button roles. The test listens for normal pointer presses and uses auxiliary-click events as a fallback for side buttons when available. Some browsers, operating systems, drivers, or mouse utilities can still consume those buttons before the page sees them, so a missing X1/X2 event is not an automatic hardware verdict.