Update '12/player.js'

12/player.js

@@ -1,11 +1,11 @@
 var track = document.querySelector("track_1"), 
-	track_div_1 = document.getElementById("track_1");
+	track_1_div = document.getElementById("track_1");
 track_1.addEventListener('cuechange', function () {
   let cues = track_1.track_1.activeCues;  // array of current cues
   console.log("cuechange", cues, cues[0].text, cues[0].startTime, cues[0].endTime);
   var d = JSON.parse(cues[0].text);
   console.log("d",d);
-  track_div.innerHTML = d.title;
+  track_1_div.innerHTML = d.title;
   var old = document.querySelector(".now_playing");
   	if (old) {
       old.classList.remove("now_playing");