Update transcript-tracer.js

transcript-tracer.js

@@ -460,4 +460,17 @@ function handleWordClick(e) {
   var mediaUrl = transcript.dataset.ttCurrentMediaUrl;
   var startSeconds = ttLinkedDataByMediaUrl[mediaUrl].wordTimings[wordIndex].startSeconds
   ttLinkedDataByMediaUrl[mediaUrl].mediaElement.currentTime = startSeconds;
+
+  // Make sure the correct transcript is selected
+  if (!ttCurrentTranscript || ttCurrentTranscript.dataset.ttTranscript != ttData.transcriptIndex) {
+    ttCurrentTranscript = document.querySelector(`[data-tt-transcript="${ttData.transcriptIndex}"]`);
+  }
+  
+  // Mark words
+  wordElement.classList.add('tt-current-word');
+
+  for (const wordElement of ttCurrentTranscript.getElementsByClassName('tt-word')) {
+    if (wordElement.classList.contains('tt-current-word')) break;
+    wordElement.classList.add('tt-previous-word');
+  }
 }