Events - mousemove

mousemove

The mousemove event fires when the user moves the mouse.

Event	IE 5.5	IE 6	IE 7	IE8b1	FF 2	FF 3b5	Saf 3.0 Win	Saf 3.1 Win	Opera 9.26	Opera 9.5b	Konqueror 3.5.7
On the window	No				Yes		Yes		Minimal		Yes
On the window	Is this event available on the window? Opera allows registration on the window only when you use `attachEvent`.
On the document	Yes				Yes		Yes		Incomplete	Yes	Yes
On the document	Is this event available on the document? Opera 9.26 does not fire this event when you use `addEventListener` in the capturing phase.
On any element	Yes				Yes		Yes		Incomplete	Yes	Yes
On any element	Is this event available on the document? Opera 9.26 does not fire this event when you use `addEventListener` in the capturing phase.
Event bubbling	Yes				Yes		Yes		Almost		Yes
Event bubbling	The event should bubble up. When using `attachEvent` registration, Opera fires the event on the window before the event on the document. (The event isn’t available on the window in any other registration.)
Cancel bubble	Yes				Yes		Yes		Yes		Yes
Cancel bubble	FF and Op allow cancel capture
Event	IE 5.5	IE 6	IE 7	IE8b1	FF 2	FF 3b5	Saf 3.0 Win	Saf 3.1 Win	Opera 9.26	Opera 9.5b	Konqueror 3.5.7

Event continues firing

Sometimes the mousemove event continues firing even if the mouse does not move. This is not a browser bug, but an OS or maybe even hardware bug. Some optical mice keep on sending mousemove interrupts, even though they aren't moved.

In general this bug is easy to work around: just check the mouse position before doing anything (and you want to check the mouse position in just about any mousemove script, anyway.)