Mouseevent ClientX JavaScript

<!DOCTYPE html>
<html>
<head>
<style>
div {
  width: 500px;
  height: 300px;
  border: 1px solid black;
  text-align: center;
}
</style>
</head>
<body>

<p>Click in the div element below to get the x (horizontal) and y (vertical) coordinates of the mouse pointer, when it is clicked.</p>

<div onclick="showCoords(event)"><p id="demo"></p></div>

<p><strong>Tip:</strong> Try to click different places in the div.</p>

<script>
function showCoords(event) {
  var cX = event.clientX;
  var sX = event.screenX;
  var cY = event.clientY;
  var sY = event.screenY;
  var coords1 = "client - X: " + cX + ", Y coords: " + cY;
  var coords2 = "screen - X: " + sX + ", Y coords: " + sY;
  document.getElementById("demo").innerHTML = coords1 + "<br>" + coords2;
}
</script>

</body>
</html>
// https://www.w3schools.com/jsref/event_clientx.asp
ayaan