MouseEvent.clientY
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
<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 | 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. |
浏览器兼容性
BCD tables only load in the browser