Add channel to be joined

assets/js/user_socket.js

@@ -0,0 +1,23 @@
+// NOTE: The contents of this file will only be executed if
+// you uncomment its entry in "assets/js/app.js".
+
+// Bring in Phoenix channels client library:
+import {Socket} from "phoenix"
+
+// And connect to the path in "lib/birdy_chat_web/endpoint.ex". We pass the
+// token for authentication.
+//
+// Read the [`Using Token Authentication`](https://hexdocs.pm/phoenix/channels.html#using-token-authentication)
+// section to see how the token should be used.
+let socket = new Socket("/socket", {authToken: window.userToken})
+socket.connect()
+
+// Now that you are connected, you can join channels with a topic.
+// Let's assume you have a channel with a topic named `room` and the
+// subtopic is its id - in this case 42:
+let channel = socket.channel("room:42", {})
+channel.join()
+  .receive("ok", resp => { console.log("Joined successfully", resp) })
+  .receive("error", resp => { console.log("Unable to join", resp) })
+
+export default socket