Element: MozMousePixelScroll event
Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.
The Firefox-only, non-standard, and obsolete MozMousePixelScroll event is fired at an Element asynchronously when a mouse wheel or similar device is operated. It's represented by the MouseScrollEvent interface.
Note:
Do not use this non-standard and obsolete event. Instead, you should always use the standard wheel event.
Syntax
Use the event name in methods like addEventListener(), or set an event handler property.
addEventListener("MozMousePixelScroll", (event) => { })
onMozMousePixelScroll = (event) => { }
Event type
A WheelEvent. Inherits from MouseEvent, UIEvent and Event.
Getting the distance scrolled
The event's detail property indicates the scroll distance in terms of lines, with negative values indicating the scrolling movement is either toward the bottom or toward the right, and positive values indicating scrolling to the top or left.
If the platform's native mouse wheel events indicate the scroll distance in terms of lines or pages, the value of detail is computed using that value and the line height or page width/height of the nearest ancestor scrollable element that contains the target element.
Note:
On macOS, the scroll distance (and therefore the value of detail) is computed based on the accelerated scroll distance.
The value of detail is never 0 if the events are legitimate.
Browser compatibility
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MozMousePixelScroll event
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Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- No support
- No support
- Non-standard. Check cross-browser support before using.
- Deprecated. Not for use in new websites.
See also
MouseScrollEvent- Gecko's legacy line or page scroll event:
DOMMouseScroll - Non-Gecko browsers' legacy mouse wheel event:
mousewheel - Standardized wheel event:
wheel