What the Double Click Test Measures
The test watches browser mouse-down events for one selected button and calculates the interval to its previous press. The threshold is a diagnostic filter, not a universal debounce specification.
Only intervals for the selected button are compared. A deliberate fast double click can also cross the threshold.
How to Use the Double Click Test
- 1Select the left, right or middle mouse button.
- 2Start with the default interval threshold and click once at a time, leaving a clear pause.
- 3Watch the suspected count and recent intervals.
- 4Repeat the run and compare another browser or mouse if a pattern persists.
How to Interpret the Result
Repeated sub-threshold presses while you intend single clicks may indicate unwanted duplicate input. One flagged interval can simply be an intentional fast click or an accidental second press.
If holding the button causes a drag to release, use the Mouse Drag Test for that different symptom.
Mouse Debounce and Unwanted Double Clicks
A mouse can suppress or delay rapid electrical transitions before the browser receives a click. This page sees only the presses that survive that device, operating-system and browser path. It cannot tell you which debounce setting the firmware used or measure contact bounce at the switch.
Use slow, separated intentional presses when investigating a suspected problem. If the counter repeatedly records a second press almost immediately after one deliberate action, save the approximate intervals and compare them with another browser or device. Changing the threshold changes which intervals are highlighted; it does not change the events that arrived.
Browser Limitations
The page sees only mouse events delivered by the browser. It cannot measure electrical contact bounce, firmware debounce time or the physical cause of repeated input. Browsers may reserve some button actions.