Update 1.hello-world.html

Author: Cube-J

1.hello-world/1.hello-world.html

@@ -26,7 +26,7 @@
          * LICENSE ALERT - THE END 
          */
 
-        window.onload = async function() {
+        (async function() {
             try {
                 const scanner = await Dynamsoft.DBR.BarcodeScanner.createInstance();
                 /** 
@@ -57,7 +57,7 @@
                 alert(ex);
                 throw ex;
             }
-        };
+        })();
     </script>
 </body>