diff --git a/public/index.html b/public/index.html
index bd36501..eaf43e1 100644
--- a/public/index.html
+++ b/public/index.html
@@ -46,6 +46,7 @@
 
   <div id="app"></div>
   <script>
+    var imgIsLoad = false
     var videoText = ''
     // 初始化PDF.js
     pdfjsLib.GlobalWorkerOptions.workerSrc = "./textPdf/pdf.worker.min.js";