how to get the position of your mouse in javascript code example

Example 1: Javascript track mouse pointer

var pointerX = -1;
var pointerY = -1;
document.onmousemove = function(event) {
	pointerX = event.pageX;
	pointerY = event.pageY;
}
setInterval(pointerCheck, 1000);
function pointerCheck() {
	console.log('Cursor at: '+pointerX+', '+pointerY);
}

Example 2: Javascript - Track mouse position

<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>