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<!DOCTYPE html>
<html>
<style>
div {border:1px solid red; height:300px;}
span {font-size:30px;}
</style>
<body>
​
<h1>MouseEvent offsetX Property</h1>
​
<p>The offsetX property returns the x-coordinate the mouse cursor, relative to the target element.</p>
​
<p>In this example, the red DIV is the target element.</p>
​
<p>Click inside the red DIV element:</p>
​
<div onclick="myFunction(event)"></div>
​
<p>The x-coordinate, relative to the left edge of the DIV element is: <span id="demo"></span></p>
​
<script>
function myFunction(event) {
  var x = event.offsetX;
  document.getElementById("demo").innerHTML = x;
}
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_event_mouse_offsetx by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 03:17:04 GMT -->
</html>
​
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