WheelEvent.deltaX

The WheelEvent.deltaX read-only property is a double representing the horizontal scroll amount in the WheelEvent.deltaMode unit.

Syntax

var dX = event.deltaX;

Example

var syntheticEvent = new WheelEvent("syntheticWheel", {"deltaX": 4, "deltaMode": 0});

console.log(syntheticEvent.deltaX);

Specifications

Specification Status Comment
Document Object Model (DOM) Level 3 Events Specification
The definition of 'WheelEvent.deltaX' in that specification.
Obsolete Initial definition.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
deltaXChrome Full support 31Edge Full support 12Firefox Full support 17IE Full support 9
Notes
Full support 9
Notes
Notes IE9 supports an old draft of the spec where this value was a long instead of a double.
Opera Full support 18Safari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support 17Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes

Legend

Full support Ā 
Full support
See implementation notes.
See implementation notes.

See also