JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://s7.directupload.net/images/131005/h5i3dcqm.jpg"></script>
<div id="currentcolor"></div>
<div id="imgholder"></div>

CSS

body {
    background-color: black;
}

#currentcolor {
    color: yellow;
    background-color: black;
    height: 50px;
    width: 50px;
    position: absolute;
    top: 50px;
    left: 350px;
}

#imgholder {
    padding-top: 10px;
    background-color: gray;
    height: 300px;
    width: 300px;
    position: absolute;
    top: 350px;
    left: 0px;
}

JavaScript

var canvas = {
  height: 300,
  width: 300
};

var color;
var imgArray = [];
var imgdata;

$(document).ready(function() {
  canvas.obj = document.createElement('canvas');
  
  $('body').append(canvas.obj);
  
  $(canvas.obj).attr('height', canvas.height);
  $(canvas.obj).attr('width', canvas.width);

  var context = canvas.obj.getContext('2d');
  var imageObj = new Image();

  imageObj.onload = function() {
    context.drawImage(imageObj, 0, 0, canvas.height, canvas.width);
    imgdata = context.getImageData(0, 0, canvas.width, canvas.height).data;
  };
  
  imageObj.src =...