[web] Change to template literals

web-src/src/App.vue

@@ -151,21 +151,17 @@ export default {
         protocol = 'wss://'
       }
 
-      let wsUrl =
-        protocol +
-        window.location.hostname +
-        ':' +
+      let wsUrl = `${protocol + window.location.hostname}:${
         vm.$store.state.config.websocket_port
+      }`
 
       if (import.meta.env.DEV && import.meta.env.VITE_OWNTONE_URL) {
         // If we are running in development mode, construct the websocket url
         // from the host of the environment variable VITE_OWNTONE_URL
         const owntoneUrl = new URL(import.meta.env.VITE_OWNTONE_URL)
-        wsUrl =
-          protocol +
-          owntoneUrl.hostname +
-          ':' +
+        wsUrl = `${protocol + owntoneUrl.hostname}:${
           vm.$store.state.config.websocket_port
+        }`
       }
 
       const socket = new ReconnectingWebSocket(wsUrl, 'notify', {