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Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The UIEvent.pageY read-only property returns the vertical coordinate of the event relative to the whole document.

Syntax

var pageY = event.pageY;

pageY is an integer value in pixels for the y-coordinate of the mouse pointer, relative to the whole document, when the mouse event fired. This property takes into account any vertical scrolling of the page.

Example

<html>
<head>
<title>pageX\pageY & layerX\layerY example</title>

<script type="text/javascript">

function showCoords(evt){
  var form = document.forms.form_coords;
  var parent_id = evt.target.parentNode.id;
  form.parentId.value = parent_id;
  form.pageXCoords.value = evt.pageX;
  form.pageYCoords.value = evt.pageY;
  form.layerXCoords.value = evt.layerX;
  form.layerYCoords.value = evt.layerY;
}

</script>

<style type="text/css">

 #d1 {
  border: solid blue 1px;
  padding: 20px;
 }

 #d2 {
  position: absolute;
  top: 180px;
  left: 80%;
  right:auto;
  width: 40%;
  border: solid blue 1px;
  padding: 20px;
 }

 #d3 {
  position: absolute;
  top: 240px;
  left: 20%;
  width: 50%;
  border: solid blue 1px;
  padding: 10px;
 }

</style>
</head>

<body onmousedown="showCoords(event)">

<p>To display the mouse coordinates please click anywhere on the page.</p>

<div id="d1">
<span>This is an un-positioned div so clicking it will return
layerX/layerY values almost the same as pageX/PageY values.</span>
</div>

<div id="d2">
<span>This is a positioned div so clicking it will return layerX/layerY
values that are relative to the top-left corner of this positioned
element. Note the pageX\pageY properties still return the
absolute position in the document, including page scrolling.</span>

<span>Make the page scroll more! This is a positioned div so clicking it
will return layerX/layerY values that are relative to the top-left
corner of this positioned element. Note the pageX\pageY properties still
return the absolute position in the document, including page
scrolling.</span>
</div>

<div id="d3">
<form name="form_coords">
 Parent Element id: <input type="text" name="parentId" size="7" /><br />
 pageX:<input type="text" name="pageXCoords" size="7" />  
 pageY:<input type="text" name="pageYCoords" size="7" /><br />
 layerX:<input type="text" name="layerXCoords" size="7" />  
 layerY:<input type="text" name="layerYCoords" size="7" />
</form>
</div>

</body>
</html>

Specifications

This property is not part of any specification.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support (Yes) [1] ? ? ? ?
Feature Android Android Webview Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support ? (Yes) [1] ? ? ? ? ? (Yes) [1]

[1] Replaced by MouseEvent.pageY in Chrome 45.

See also

Etiquetas y colaboradores del documento

 Última actualización por: cvrebert,