added comments

NUXT/layouts/default.vue

@@ -166,6 +166,8 @@ export default {
   },
 
   watch: {
+    // Watch for any changes in the route string
+    // When change is detected, scroll main div back to the top
     $route() {
       this.$refs.pgscroll.scrollTop = 0; // scroll back to top when moving to new route
     }

NUXT/pages/watch.vue

@@ -171,6 +171,8 @@ export default {
     }
   },
   watch: {
+    // Watch for change in the route query string (in this case, ?v=xxxxxxxx to ?v=yyyyyyyy)
+    // When change is detected, reset and run getVideo function again
     $route: {
       deep: true,
       handler(newRt, oldRt) {