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JavaScript DOM MouseEvent property: pageX

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The pageX property of MouseEvent objects within the JavaScript DOM (i.e. events triggered by an action with the mouse) returns the horizontal coordinate of the mouse pointer (relative to the page / document).

 

EXAMPLE:


HTML USED IN THIS EXAMPLE:
<!DOCTYPE html>
<html> <!-- Copyright (c) Nematrian Limited 2018 -->
<head></head>
<body>
Try clicking on this box:
<p style="background-color: yellow; border: 2px solid black; width: 200px; height: 100px;"
  onmousedown="myOnmousedown(event)"><br><br></p>

MouseEvent outcomes are:<br><br>
altKey: <b id="mouse1"></b><br>
button (usually 0 = left, 1 = middle, 2 = right): <b id="mouse2"></b><br>
buttons (usually sum of 1 = left, 2 = right, 4 = middle, 8 = back, 16 = forward): 
  <b id="mouse3"></b><br>
clientX: <b id="mouse4"></b><br>
clientY: <b id="mouse5"></b><br>
ctrlKey: <b id="mouse6"></b><br>
detail: <b id="mouse7"></b><br>
metaKey: <b id="mouse8"></b><br>
pageX: <b id="mouse9"></b><br>
pageY: <b id="mouse10"></b><br>
relatedTarget: <b id="mouse11"></b><br>
screenX: <b id="mouse12"></b><br>
screenY: <b id="mouse13"></b><br>
shiftKey: <b id="mouse14"></b><br>
which: <b id="mouse15"></b><br>

<script>
function myOnmousedown(event) {
  document.getElementById("mouse1").innerHTML = event.altKey;
  document.getElementById("mouse2").innerHTML = event.button;
  document.getElementById("mouse3").innerHTML = event.buttons;
  document.getElementById("mouse4").innerHTML = event.clientX;
  document.getElementById("mouse5").innerHTML = event.clientY;
  document.getElementById("mouse6").innerHTML = event.ctrlKey;
  document.getElementById("mouse7").innerHTML = event.detail;
  document.getElementById("mouse8").innerHTML = event.metaKey;
  document.getElementById("mouse9").innerHTML = event.pageX;
  document.getElementById("mouse10").innerHTML = event.pageY;
  document.getElementById("mouse11").innerHTML = event.relatedTarget;
  document.getElementById("mouse12").innerHTML = event.screenX;
  document.getElementById("mouse13").innerHTML = event.screenY;
  document.getElementById("mouse14").innerHTML = event.shiftKey;
  document.getElementById("mouse15").innerHTML = event.which;
}
</script>

</body>
</html>


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