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This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The offsetX read-only property of the MouseEvent interface provides the offset in the X coordinate of the mouse pointer between that event and the padding edge of the target node. 

Syntax

var xOffset = instanceOfMouseEvent.offsetX;

Return value

A double floating point value. Early versions of the spec defined this as an integer. See the Browser compatibility section for details.

Specifications

Specification Status Comment
CSS Object Model (CSSOM) View Module
The definition of 'MouseEvent' in that specification.
Working Draft Initial definition

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) (Yes) 39.0 (39.0) 6 (Yes) (Yes)
Redefined from long to double 56 ? ? ? ? ?
Feature Android Webview Chrome for Android Edge Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) (Yes) (Yes) 43.0 (43.0) ? ? ?
Redefined from long to double 56 56 ? ? ? ? ?

See also

Document Tags and Contributors

 Last updated by: JonMarkPerry,