Add image fade functionality

js/imagefade.js

@@ -0,0 +1,19 @@
+export default class ImageFade {
+  constructor() {
+    this.images = Array.prototype.slice.call(document.querySelectorAll('img'));
+    this.images.forEach((image) => {
+      this.prepareImage(image);
+      this.setEvent(image);
+    });
+  }
+
+  prepareImage(image) {
+    image.style.opacity = 0;
+  }
+
+  setEvent(image) {
+    image.addEventListener('load', () => {
+      image.style.opacity = 1;
+    });
+  }
+}