MouseEvent.clientY
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
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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。
语法
var y = instanceOfMouseEvent.clientY
Return value
被 CSSOM View Module 重新定义为一个 double
类型的浮点值。原来这个属性是被定义为一个 long
整数。可以在 "浏览器兼容性" 那里查看详细内容。
Example
js
<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>
规范
Specification |
---|
UI Events # dom-mouseevent-clienty |
浏览器兼容性
BCD tables only load in the browser