This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The offsetY read-only property of the MouseEvent interface provides the offset in the Y coordinate of the mouse pointer between that event and the padding edge of the target node.
var yOffset = instanceOfMouseEvent.offsetY;
A double floating point value. Early versions of the spec defined this as an integer. See the Browser compatibility section for details.
| Specification | Status | Comment |
|---|---|---|
| CSS Object Model (CSSOM) View Module The definition of 'MouseEvent' in that specification. | Working Draft | Initial definition |
| 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 | ? | ? | ? | ? | ? |
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https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/offsetY