dont require music-controls

static/js/rot.js

@@ -77,7 +77,9 @@
         volumeSet(Math.min(1, Math.max(0, audio.volume + number)));
     }
     function updateVolumeLabel() {
-        document.getElementById("user-audio-percentage").innerHTML = Math.round(audio.volume * 100) + "%";
+        let txtElm = document.getElementById("user-audio-percentage");
+        if (txtElm)
+            txtElm.innerHTML = Math.round(audio.volume * 100) + "%";
     }
 
     //Registers a mutation observer for an element. Upon triggering and the callback
@@ -253,16 +255,10 @@
         audio.volume = 0.2; //Default volume
 
     //Initialize audio controls and event listeners
-    waitUntil("#music-controls").then((controls) => {
-        updateVolumeLabel();
-        controls.querySelector("#music-up").onclick = () => volumeAdd(0.05);
-        controls.querySelector("#music-down").onclick = () => volumeAdd(-0.05);
-    });
+    waitUntil("#music-up").then((btn) => btn.addEventListener('click', () => volumeAdd(0.05)));
+    waitUntil("#music-down").then((btn) => btn.addEventListener('click', () => volumeAdd(-0.05)));
 
-    waitUntil("#music-slider").then((slider) => {
-        updateVolumeLabel();
-        slider.oninput = () => volumeSet(slider.value / 100);
-    });
+    waitUntil("#music-slider").then((slider) => slider.addEventListener('input', () => volumeSet(slider.value / 100)));
 
     waitUntil("#music-mute").then((box) => {
         audio.muted = box.checked = localStorage.audiomuted === "true";
@@ -272,6 +268,8 @@
         })
     });
     
+    waitUntil("#user-audio-percentage").then(updateVolumeLabel);
+
     //Monkey patches and event listeners
     const oldPushState = history.pushState;
     history.pushState = function pushState() {