Online Mouse Test

The mouse test listens for standard browser mouse and wheel events inside its explicit test surface. A press updates the logical button count and visible state; a release clears that state. Wheel input is separated into up, down, and predominantly horizontal observations. The latest event panel and bounded timeline help confirm order and timing without storing a raw history on a server. A browser-generated double-click event is counted separately from ordinary button presses.

This makes the mouse tester useful when a click appears missing, a side button seems inactive, or a wheel direction behaves differently in one program. The result is factual: for example, Left button input detected or No middle-button event captured yet. It does not calculate a percentage of mouse health, inspect electrical contacts, or prove that every physical movement will be reported correctly in every application.

Browser MouseEvent numbering normally represents the primary button as button 0, the auxiliary or wheel button as button 1, and the secondary button as button 2. Common Back and Forward controls are exposed as buttons 3 and 4. These are logical assignments, not guaranteed physical locations. Left-handed operating-system settings, vendor profiles, accessibility software, remote sessions, or application remapping can change which physical control produces a given logical number.

The diagram labels the familiar left, middle, right, Back, and Forward roles so the mouse button test remains easy to scan. The event timeline also includes the browser button number, which is the more precise evidence. If a thumb button activates navigation before the page can observe it, or if a browser reserves that action, test it in the vendor's official utility and another application. Absence from this page alone is not proof that the control is broken.

A normal right click opens the browser context menu. Inside this clearly labeled mouse click test surface only, that default menu is suppressed so the press and release remain visible. The rest of the page keeps normal context-menu behavior. Back, Forward, autoscroll, tab closing, and other auxiliary actions may also be reserved by the operating system or browser, so a web page may receive incomplete or no auxiliary events even when another application responds.

Browser engines can differ in whether they emit click, auxclick, contextmenu, and double-click events for each button. The tester therefore emphasizes down and up state, which is broadly useful, and reports the native double-click event only when the browser supplies it. A touch-only screen usually produces pointer or synthesized primary-click behavior rather than the full desktop mouse event set. Connect a mouse before interpreting missing wheel or side-button data.

Begin with a controlled pass: use each button once, release it fully, and inspect whether the pressed state returns to released. Scroll slowly up and down, then repeat with a normal rhythm. If an expected event is missing, start fresh and repeat. Next, try another browser and a simple native application. Reconnect the mouse, review wireless power and receiver placement, and check official device software or profiles without changing several variables at once.

If only one application fails while the online mouse test and other programs respond, application configuration is the stronger lead. If the same logical event is absent across several environments, connection, mapping, or device behavior deserves further investigation. Use the mouse double click test for suspicious repeated presses, the mouse polling rate test for movement-event delivery, and the mouse wheel not working guide for a structured wheel checklist.

Each button count increases on a browser-observed press, not on every click abstraction. A held button should show Pressed until its release reaches the test surface. The wheel totals count delivered wheel messages by dominant axis; they do not count physical notches or distance. Horizontal scroll can come from a tilt wheel, touchpad, Shift mapping, or software transformation, and the mouse test cannot reliably identify which source produced it.

Timestamps are relative to the current local session and are useful for event ordering. They are not a USB capture and should not be compared with manufacturer latency specifications. The timeline is intentionally short and can be cleared independently so one interaction can be inspected without losing the aggregate counts. Start fresh resets all browser-observed metrics, avoiding accidental mixing between devices, settings, or troubleshooting changes.

A passing mouse test means the selected browser received the interactions shown during that sample. It does not prove that a physical switch, encoder, cable, radio link, firmware, or driver is perfect. Intermittent behavior may not occur during a short run, and web security or platform conventions may hide certain buttons. Repeat a suspicious pattern under controlled conditions and consult official support before repair, warranty, or purchasing decisions.

All active event processing happens in the browser, and the tool does not upload the raw timeline to perform the check. Continue with the mouse double click test when presses appear duplicated, the mouse polling rate test when pointer delivery is the question, or the scroll wheel reverse test for unexpected wheel signs. The scroll direction test and wheel event tester offer narrower views of calibrated direction and raw WheelEvent fields.