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The screenY read-only property of the MouseEvent interface provides the vertical coordinate (offset) of the mouse pointer in global (screen) coordinates.


var pixelNumber = instanceOfMouseEvent.screenY

Return value

double floating point value. Early versions of the spec defined this as an interger referring to the number of pixels. See the Browser compatibility section for details.


<title>screenX\screenY example</title>

<script type="text/javascript">

function showCoords(evt){
    "screenX value: " + evt.screenX + "\n"
    + "screenY value: " + evt.screenY + "\n"


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


Specification Status Comment
CSS Object Model (CSSOM) View Module
The definition of 'screenY' in that specification.
Working Draft Redefines MouseEvent from long to double. 
Document Object Model (DOM) Level 3 Events Specification
The definition of 'MouseEvent.screenY' in that specification.
Obsolete No change from Document Object Model (DOM) Level 2 Events Specification.
Document Object Model (DOM) Level 2 Events Specification
The definition of 'MouseEvent.sceenY' in that specification.
Obsolete Initial definition

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Edge Firefox (Gecko) Chrome Internet Explorer Opera Safari
Basic support (Yes) (Yes) (Yes) 6 (Yes) (Yes)
Feature Edge Firefox Mobile (Gecko) Android IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) (Yes) (Yes) (Yes) (Yes) (Yes)

See also

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Colaboradores desta página: jpmedley, libbymc, bertyhell, cvrebert, teoli, kscarfone, Jeremie
Última atualização por: jpmedley,