FIX #4074 , #2618 Fixed doSearch Race condition of improper loading, Fixed Minor another syntax error

index.html

@@ -109,9 +109,17 @@
             }
         </script>
         <script type="text/javascript">
-            $(document).ready(function() {
-                doSearch();
-            });
+            const script = document.createElement("script");
+            script.src = "js/activity.js";
+            script.onload = () => {
+                if (typeof Activity !== "undefined") {
+                    const activityInstance = new Activity();
+                    if (typeof activityInstance.doSearch === "function") {
+                        activityInstance.doSearch();
+                    }
+                }
+            };
+            document.body.appendChild(script);
         </script>
     </head>
 

js/activity.js

@@ -1437,6 +1437,7 @@ class Activity {
          * @private
          */
         this._doHardStopButton = (onblur) => {
+            this.blocks = this.blocks || {}; // Initialize if undefined
             this.blocks.activeBlock = null;
             hideDOMLabel();