clean userlist

p2p-media/public/js/main.js

@@ -94,6 +94,10 @@ class App {
                 createLi('users', data.user)
             })
             socket.on('users', function (data) {
+                var users = document.getElementById('users')
+                while (users.firstChild) {
+                    users.removeChild(users.firstChild)
+                }
                 data.users.map(user => createLi('users', user))
             })
             socket.on('quit', function (data) {
@@ -111,7 +115,7 @@ class App {
                     socket.emit('emit msg', { user: window.name, chat: chat })
                     createLi('chats', window.name + ': ' + chat)
                     document.getElementById('chatbox').value = ''
-                    document.getElementById('chats').scrollTo(0,document.getElementById('chats').scrollHeight)
+                    document.getElementById('chats').scrollTo(0, document.getElementById('chats').scrollHeight)
                 }
             }
             document.getElementById('chatbox').addEventListener('keydown', function (event) {