Transcript: For clarity, use more verbose names and add comments

1 files changed, 12 insertions, 12 deletions

diff --git a/youtube/static/js/common.js b/youtube/static/js/common.js
index 4c7ee51..8f27a64 100644
--- a/youtube/static/js/common.js
+++ b/youtube/static/js/common.js
@@ -1,32 +1,32 @@
 Q = document.querySelector.bind(document);
 function text(msg) { return document.createTextNode(msg); }
 function clearNode(node) { while (node.firstChild) node.removeChild(node.firstChild); }
-function toMS(s) {
+function toTimestamp(s) {
   var s = Math.floor(s);
   var m = Math.floor(s/60); var s = s % 60;
   return `0${m}:`.slice(-3) + `0${s}`.slice(-2);
 }
 
 
-var cur_tt_idx = 0;
+var cur_track_idx = 0;
 function getActiveTranscriptTrackIdx() {
-    let tts = Q("video").textTracks;
-    if (!tts.length) return;
-    for (let i=0; i < tts.length; i++) {
-        if (tts[i].mode == "showing") {
-            cur_tt_idx = i;
-            return cur_tt_idx;
+    let textTracks = Q("video").textTracks;
+    if (!textTracks.length) return;
+    for (let i=0; i < textTracks.length; i++) {
+        if (textTracks[i].mode == "showing") {
+            cur_track_idx = i;
+            return cur_track_idx;
         }
     }
-    return cur_tt_idx;
+    return cur_track_idx;
 }
 function getActiveTranscriptTrack() { return Q("video").textTracks[getActiveTranscriptTrackIdx()]; }
 
 function getDefaultTranscriptTrackIdx() {
-  let tts = Q("video").textTracks;
-  return tts.length - 1;
+  let textTracks = Q("video").textTracks;
+  return textTracks.length - 1;
 }
 
 window.addEventListener('DOMContentLoaded', function() {
-    cur_tt_idx = getDefaultTranscriptTrackIdx();
+    cur_track_idx = getDefaultTranscriptTrackIdx();
 });