url not hardcoded

web/app.html

@@ -7,4 +7,10 @@
 <!-- Create a div where the graphs will take place -->
 <div id="graphs"></div>
 
-<script src="http://127.0.0.1/app.js"></script>
+<!-- <script src="http://127.0.0.1/app.js"></script> -->
+<script>
+let currenturl = (window.location);
+var s = document.createElement( 'script' );
+s.setAttribute( 'src', `${currenturl}/app.js` );
+document.body.appendChild( s );
+</script>