The MouseEvent offsetX property is a read-only property which is used for returning the x-coordinate of the mouse pointer, relative to the target element.
Syntax :
event.offsetX
Return Value: It returns a number which represents the horizontal coordinate of the mouse pointer, in pixels.
Below program illustrates the MouseEvent offsetX property:
Example: Finding out the horizontal coordinate of the mouse pointer relative to a <div> element.
html
<!DOCTYPE html>
< html >
< head >
< title >MouseEvent offsetX Property in HTML</ title >
< style >
div {
border: 3px solid green;
height: 100px;
width: 500px;
}
h1 {
color: green;
}
h2 {
font-family: Impact;
}
body {
text-align: center;
}
</ style >
</ head >
< body >
< h1 >GeeksforGeeks</ h1 >
< h2 >MouseEvent offsetX Property</ h2 >
< p >Click inside the green box to get
the x-coordinate relative to the top edge.</ p >
< div onclick="coord(event)"></ div >
< p >The x-coordinate, relative to
the top edge of the DIV element is:
< span id="test"></ span ></ p >
< script >
function coord(event) {
var c = event.offsetX;
document.getElementById(
"test").innerHTML = c;
}
</ script >
</ body >
</ html >
|
Output:
- After clicking the button:

- After clicking the button:

Supported Browsers:
- Opera 12.1 and above
- Internet Explorer 9 and above
- Google Chrome 1 and above
- Edge 12 and above
- Firefox 39 and above
- Apple Safari 1 and above
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Last Updated :
13 Jun, 2022
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