show mouse position on canvas js code example

Example 1: javascript canvas mousemove

// on brouser
var canv = document.getElementById('my_canvas');
canv.addEventListener('mousemove', e => {
    console.log({x:e.offsetX, y:e.offsetY, z:e})
});

// for mobile on touch
var canv = document.getElementById('my_canvas');
canv.addEventListener('touchmove', e => {
    ee = e.touches[0];
    console.log({x:ee.clientX, y:ee.clientY, z:e})
});

Example 2: get mouse position javascript

<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>