var myImages = ['img/star.png','img/koin.png'];

(function() {
  var imageCount = myImages.length;
  var loadedCount = 0, errorCount = 0;

  var checkAllLoaded = function() {
    if (loadedCount + errorCount == imageCount ) {
       // do what you need to do.
       console.log("laodedddddd");
    that.map = spriteData;
    that.image = new Image();
    that.image.onload = callback;
    that.image.src = 'images/sprites.png'; //dummy
    }
  };

  var onload = function() {
    loadedCount++;
    checkAllLoaded();
  }, onerror = function() {
    errorCount++;
    checkAllLoaded();
  };

  for (var i = 0; i < imageCount; i++) {
    var img = new Image();
    img.onload = onload;
    img.onerror = onerror;
    img.src = myImages[i];
  }
})();
///////