80 lines
2.7 KiB
Markdown
80 lines
2.7 KiB
Markdown
---
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id: 589fc832f9fc0f352b528e79
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title: Send and Display Chat Messages
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challengeType: 2
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forumTopicId: 301562
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dashedName: send-and-display-chat-messages
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---
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# --description--
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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.
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```js
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$('form').submit(function() {
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/*logic*/
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});
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```
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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`.
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```js
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socket.emit('chat message', messageToSend);
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```
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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 `io.emit` with the data being an object containing `name` and `message`.
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In `client.js`, you should now listen for event `'chat message'` and, when received, append a list item to `#messages` with the name, a colon, and the message!
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At this point, the chat should be fully functional and sending messages across all clients!
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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 [here](https://gist.github.com/camperbot/d7af9864375207e254f73262976d2016).
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# --hints--
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Server should listen for `'chat message'` and then emit it properly.
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/_api/server.js').then(
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(data) => {
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assert.match(
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data,
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/socket.on.*('|")chat message('|")[^]*io.emit.*('|")chat message('|").*name.*message/gis,
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'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'
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);
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},
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(xhr) => {
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throw new Error(xhr.statusText);
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}
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);
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```
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Client should properly handle and display the new data from event `'chat message'`.
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/public/client.js').then(
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(data) => {
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assert.match(
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data,
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/socket.on.*('|")chat message('|")[^]*messages.*li/gis,
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'You should append a list item to #messages on your client within the "chat message" event listener to display the new message'
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);
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},
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(xhr) => {
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throw new Error(xhr.statusText);
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}
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);
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```
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# --solutions--
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```js
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/**
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Backend challenges don't need solutions,
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because they would need to be tested against a full working project.
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Please check our contributing guidelines to learn more.
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*/
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```
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