removed e parameter

Author: digilou

13 - Slide in on Scroll/index-FINISHED.html

@@ -60,7 +60,7 @@ <h1>Slide in on Scroll</h1>
 
     const sliderImages = document.querySelectorAll('.slide-in');
 
-    function checkSlide(e) {
+    function checkSlide() {
       sliderImages.forEach(sliderImage => {
         // half way through the image
         const slideInAt = (window.scrollY + window.innerHeight) - sliderImage.height / 2;