use the npm module minified version of the js script

public/views/login.html

@@ -46,7 +46,7 @@
 
         <!-- xss -->
 
-        <script src="https://cdn.jsdelivr.net/gh/leizongmin/js-xss@master/dist/xss.js"></script>
+        <script src="https://cdn.jsdelivr.net/npm/xss/dist/xss.min.js"></script>
 
         <!-- axios -->