Sys.UI.DomEvent offsetY Field
Gets the y-coordinate of the mouse pointer's position relative to the object that raised the event.
var offsetY = domEventVar.offsetY;
Return Value
An integer that represents the y-coordinate in pixels.
Remarks
Use the offsetY field to get the vertical offset between the mouse position and the top of the object that raised the event.
Example
The following example shows how to use the offsetY field to retrieve the y-coordinate of the mouse pointer's position relative to the object that raised the event.
<script type="text/javascript">
Sys.UI.DomEvent.addHandler($get("Button1"), "click", processEventInfo);
function processEventInfo(eventElement) {
var result = '';
try {
result += "altKey = " + eventElement.altKey + "<br/>";
result += "button = " + eventElement.button + "<br/>";
result += "keyCode = " + eventElement.keyCode + "<br/>";
result += "clientX = " + eventElement.clientX + "<br/>";
result += "clientY = " + eventElement.clientY + "<br/>";
result += "ctrlKey = " + eventElement.ctrlKey + "<br/>";
result += "offsetX = " + eventElement.offsetX + "<br/>";
result += "offsetY = " + eventElement.offsetY + "<br/>";
result += "screenX = " + eventElement.screenX + "<br/>";
result += "screenY = " + eventElement.screenY + "<br/>";
result += "shiftKey = " + eventElement.shiftKey + "<br/>";
result += "target.id = " + eventElement.target.id + "<br/>";
result += "type = " + eventElement.type + "<br/>";
}
catch(e) {
alert("Error:" + e.message);
}
$get('Label2').innerHTML = result;
}
</script>
<script type="text/javascript">
Sys.UI.DomEvent.addHandler($get("Button1"), "click", processEventInfo);
function processEventInfo(eventElement) {
var result = '';
try {
result += "altKey = " + eventElement.altKey + "<br/>";
result += "button = " + eventElement.button + "<br/>";
result += "keyCode = " + eventElement.keyCode + "<br/>";
result += "clientX = " + eventElement.clientX + "<br/>";
result += "clientY = " + eventElement.clientY + "<br/>";
result += "ctrlKey = " + eventElement.ctrlKey + "<br/>";
result += "offsetX = " + eventElement.offsetX + "<br/>";
result += "offsetY = " + eventElement.offsetY + "<br/>";
result += "screenX = " + eventElement.screenX + "<br/>";
result += "screenY = " + eventElement.screenY + "<br/>";
result += "shiftKey = " + eventElement.shiftKey + "<br/>";
result += "target.id = " + eventElement.target.id + "<br/>";
result += "type = " + eventElement.type + "<br/>";
}
catch(e) {
alert("Error:" + e.message);
}
$get('Label2').innerHTML = result;
}
</script>