JSFiddle - React, Tailwind, and code Playground

HTML

<div id="target"></div>

CSS

#target{
    margin-left:100px;
    margin-top:200px;
    width:100px;
    height:100px;
    background-color:#c66;
}

JavaScript

$('#target').mousemove(function(e){
 var $thispos = $(this).offset();
 var inImage = {'x':e.pageX - $thispos.left , 'y':e.pageY - $thispos.top};
 $(this).html(inImage.x+ ', ' + inImage.y) ;  
});