screenY event properties
Event objects Definition and Usage
screenY event property returns the mouse pointer when the event occurs with respect to the vertical axis of the screen.
grammar
event.screenY
Examples
Examples
The following example shows the coordinates of the mouse pointer when the event occurs:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>本教程(w3big.com)</title>
<script type="text/javascript">
function coordinates(event){
x=event.screenX
y=event.screenY
alert("X=" + x + " Y=" + y)
}
</script>
</head>
<body onmousedown="coordinates(event)">
<p>
在文档中点击某个位置。消息框会提示出指针相对于屏幕的 x 和 y 坐标。
</p>
</body>
</html>
<html>
<head>
<meta charset="utf-8">
<title>本教程(w3big.com)</title>
<script type="text/javascript">
function coordinates(event){
x=event.screenX
y=event.screenY
alert("X=" + x + " Y=" + y)
}
</script>
</head>
<body onmousedown="coordinates(event)">
<p>
在文档中点击某个位置。消息框会提示出指针相对于屏幕的 x 和 y 坐标。
</p>
</body>
</html>
try it"
Event objects