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MouseEvent.clientY

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MouseEvent.clientY 是只读属性, 它提供事件发生时的应用客户端区域的垂直坐标 (与页面坐标不同)。例如,当你点击客户端区域的左上角时,鼠标事件的 clientY 值为 0 ,这一值与页面是否有垂直滚动无关。

Syntax

var y = instanceOfMouseEvent.clientY

Return value

一个number类型

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
CSS Object Model (CSSOM) View Module
clientY
Working Draft Redefines MouseEvent from long to double
Document Object Model (DOM) Level 3 Events Specification
MouseEvent.clientY
Obsolete No change from Document Object Model (DOM) Level 2 Events Specification.
Document Object Model (DOM) Level 2 Events Specification
MouseEvent.clientY
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 Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) (Yes) (Yes) 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) ? ? ? ?
Redefined from long to double 56 56 ? ? ? ? ?

See also

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