Chat js on page

chat.js

chatManager
    .connect()
    .then(currentUser => {  
        currentUser.rooms.forEach(r => currentUser.subscribeToRoom({
            roomId: currentUser.rooms[0].id,
            hooks: {
              onNewMessage: message => {
                console.log(`Received new message: ${message.text}`)
              }
            }
        })
    )    

    }).catch(error => {
        console.error("error:", error);
    });