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Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

Deprecated
This feature has been removed from the Web standards. Though some browsers may still support it, it is in the process of being dropped. 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.

The MouseWheelEvent interface represents events that occur due to the user turning a mouse wheel.

Do not use this interface for wheel events.

Like MouseScrollEvent, this interface is non-standard and deprecated. It was used in non-Gecko browsers only. Instead use the standard WheelEvent.

Properties

Attribute Type Description
wheelDelta Read only long The distance in pixels (defined as so by MSDN, but the actual usage is different, see mousewheel).
wheelDeltaX Read only long? The value along horizontal axis of wheelDelta.
wheelDeltaY Read only long? The value along vertical axis of wheelDelta.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic support
DeprecatedNon-standard
Chrome Full support YesEdge ? Firefox No support NoIE Full support 6Opera Full support YesSafari Full support YesWebView Android ? Chrome Android ? Edge Mobile ? Firefox Android No support NoOpera Android ? Safari iOS ? Samsung Internet Android ?
wheelDelta
DeprecatedNon-standard
Chrome No support NoEdge ? Firefox No support NoIE Full support 9Opera No support NoSafari No support NoWebView Android No support NoChrome Android No support NoEdge Mobile ? Firefox Android No support NoOpera Android No support NoSafari iOS No support NoSamsung Internet Android ?
wheelDeltaX
DeprecatedNon-standard
Chrome Full support YesEdge ? Firefox No support NoIE No support NoOpera No support NoSafari Full support YesWebView Android ? Chrome Android ? Edge Mobile ? Firefox Android No support NoOpera Android No support NoSafari iOS ? Samsung Internet Android ?
wheelDeltaY
DeprecatedNon-standard
Chrome Full support YesEdge ? Firefox No support NoIE No support NoOpera No support NoSafari Full support YesWebView Android ? Chrome Android ? Edge Mobile ? Firefox Android No support NoOpera Android No support NoSafari iOS ? Samsung Internet Android ?

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
Non-standard. Expect poor cross-browser support.
Non-standard. Expect poor cross-browser support.
Deprecated. Not for use in new websites.
Deprecated. Not for use in new websites.

See also

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