MouseEvent.clientY

by 3 contributors:

The MouseEvent.clientY read-only property returns the vertical coordinate within the application's client area at which the event occurred (as opposed to the coordinates within the page). For example, clicking in the top-left corner of the client area will always result in a mouse event with a clientY value of 0, regardless of whether the page is scrolled vertically.

Syntax

var y = instanceOfMouseEvent.clientY

Return value

A number

Example

<html>
<head>
<title>clientX\clientY example</title>

<script type="text/javascript">
function showCoords(evt){
  alert(
    "clientX value: " + evt.clientX + "\n"
    + "clientY value: " + evt.clientY + "\n"
  );
}
</script>
</head>

<body onmousedown="showCoords(event)">
<p>To display the mouse coordinates click anywhere on the page.</p>
</body>
</html>

Specifications

Specification Status Comment
Document Object Model (DOM) Level 3 Events Specification
The definition of 'MouseEvent.clientY' in that specification.
Working Draft No change from Document Object Model (DOM) Level 2 Events Specification.
Document Object Model (DOM) Level 2 Events Specification
The definition of 'MouseEvent.clientY' in that specification.
Recommendation Initial definition.

Browser compatibility

Feature Firefox (Gecko) Chrome Internet Explorer Opera Safari
Basic support (Yes) (Yes) (Yes) (Yes) (Yes)
Feature Firefox Mobile (Gecko) Android IE Mobile Opera Mobile Safari Mobile
Basic support ? ? ? ? ?

See also

Document Tags and Contributors

Contributors to this page: teoli, kscarfone, Jeremie
Last updated by: teoli,