--description--

It's time you start allowing clients to send a chat message to the server to emit to all the clients! In your client.js file, you should see there is already a block of code handling when the message form is submitted.

$('form').submit(function() {
  /*logic*/
});

Within the form submit code, you should emit an event after you define messageToSend but before you clear the text box #m. The event should be named 'chat message' and the data should just be messageToSend.

socket.emit('chat message', messageToSend);

Now, on your server, you should be listening to the socket for the event 'chat message' with the data being named message. Once the event is received, it should emit the event 'chat message' to all sockets using io.emit, sending a data object containing the username and message.

In client.js, you should now listen for event 'chat message' and, when received, append a list item to #messages with the username, a colon, and the message!

At this point, the chat should be fully functional and sending messages across all clients!

Submit your page when you think you've got it right. If you're running into errors, you can check out the project completed up to this point.

--hints--

Server should listen for 'chat message' and then emit it properly.

async (getUserInput) => {
  const url = new URL("/_api/server.js", getUserInput("url"));
  const res = await fetch(url);
  const data = await res.text();
  assert.match(
    data,
    /socket.on.*('|")chat message('|")[^]*io.emit.*('|")chat message('|").*username.*message/s,
    'Your server should listen to the socket for "chat message" then emit to all users "chat message" with name and message in the data object'
  );
}

Client should properly handle and display the new data from event 'chat message'.

async (getUserInput) => {
  const url = new URL("/public/client.js", getUserInput("url"));
  const res = await fetch(url);
  const data = await res.text();
  assert.match(
    data,
    /socket.on.*('|")chat message('|")[^]*messages.*li/s,
    'You should append a list item to #messages on your client within the "chat message" event listener to display the new message'
  );
}