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MouseEvent.clientY

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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) 6 (Yes) (Yes)
Feature Firefox Mobile (Gecko) Android IE Mobile Opera Mobile Safari Mobile
Basic support ? ? ? ? ?

See also

Etiquetas do documento e colaboradores

 Colaboradores desta página: Perelandric, smalllong, bertyhell, cvrebert, teoli, kscarfone, Jeremie
 Última atualização por: Perelandric,