diff --git a/lib/frontend/src/api.js b/lib/frontend/src/api.js
index a033869b..cbf362cc 100644
--- a/lib/frontend/src/api.js
+++ b/lib/frontend/src/api.js
@@ -7,11 +7,11 @@ const socket = {
   pool: {},
   ws: null,
 
+  /**
+   * Connect to the server via websocket.
+   * @param {string|null} url - This is just work for the first connect.
+   */
   connect(url) {
-    /*
-    Connect to the server via websocket.
-    @param url {String|null} This is just work for the first connect.
-     */
     if (!socket.url) {
       socket.url = url;
     }