dynamically create rooms chatboxes

src/public/chat.js

@@ -1,11 +1,11 @@
 const socket = io();
-const form = document.getElementById('form');
-const input = document.getElementById('input');
 
-form.addEventListener('submit', function(e) {
-    e.preventDefault();
-    if (input.value) {
-        socket.emit('chat message', input.value);
-        input.value = '';
-    }
-});
+export function create_listener(form, input) {
+    form.addEventListener('submit', function(e) {
+        e.preventDefault();
+        if (input.value) {
+            socket.emit('chat message', input.value, form.id);
+            input.value = '';
+        }
+    });
+}