added on click listeners on comments

js/video.js

@@ -26,12 +26,10 @@ class VideoPlayer {
     }
   }
   // Posouvání ve videu
-  skipAhead() {
+  skipAhead(skipTo) {
     const progressBar = document.getElementById("progress-bar");
     const video = document.getElementById("video");
 
-    let skipTo = this.value;
-
     video.currentTime = skipTo;
     progressBar.value = skipTo;
   }