Mouse Tester
Display mouse pointer position, buttons bitmask, pressure, and pointer type in a test area.
How to use
- Move the mouse and press its buttons inside the stage to see coordinates and numeric state change.
Capabilities and scope
The enhanced tester accepts only pointermove/pointerdown events whose pointerType is mouse and rounds X/Y relative to the area's top-left corner.
How it works
Client coordinates minus getBoundingClientRect, event.buttons, event.pressure, and pointerType are stored on each accepted event.
Example
Moving while holding the left button updates both the buttons value and X/Y.
Useful for
- Check whether mouse movement and button events reach the browser
Before you use it
- The buttons number is a PointerEvent bitmask, not a full driver-level button decoder, and touch/pen pointers are ignored here.
Frequently asked questions
Will touch input appear here?
No. This runner processes only pointerType=mouse.