Image to DataUrl using File Reader

gistfile1.txt

//Source: http://stackoverflow.com/questions/6150289/how-to-convert-image-into-base64-string-using-javascript

$( "#imagetourl" ).click(function() {
function toDataUrl(url, callback) {
  var xhr = new XMLHttpRequest();
  xhr.onload = function() {
    var reader = new FileReader();
    reader.onloadend = function() {
      callback(reader.result);
    }
    reader.readAsDataURL(xhr.response);
  };
  xhr.open('GET', url);
  xhr.responseType = 'blob';
  xhr.send();
}

toDataUrl('https://source.unsplash.com/bWI4Vd4vI3w/500x500', function(base64Img) {
  //console.log(base64Img);
  window.open(base64Img)
});
  
});