JSFiddle - React, Tailwind, and code Playground

CSS

div.check {
    border-style:solid;
    border-width:1px;
    width:500px;
    height:500px;
}
.k {
    height:10px;
    width:10px;
    background:red;
    position: absolute;
}

JavaScript

var oldX=0,oldY=0;
$(document).mousemove(function(e){
     $('.movestatus').text('mouse moved');
     var clientCoords = "( " + e.clientX + ", " + e.clientY + " )";
     $(".chords").text(clientCoords);
     //if(e.clientX-oldX>5||e.clientY-oldY>5)
     //{
     var ap = $("<div class='k'></div>");
     ap.offset({ top: e.clientY, left: e.clientX });
         $("body").append(ap);//}
     oldX = e.clientX;
     oldY = e.clientY;
 });