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MouseEvent.offsetX

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

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 compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
Basic support Yes Yes 39 6 Yes Yes
Value type changed from long to double 56 ? ? ? ? ?
Mobile
Android webview Chrome for Android Edge Mobile Firefox for Android Opera for Android iOS Safari Samsung Internet
Basic support Yes Yes Yes 43 ? ? ?
Value type changed from long to double 56 56 ? ? ? ? ?

See also

Edit this page on MDN

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https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/offsetX