Socket.io事件未触发

Question

Here is the full code :- index.html 这是完整的代码：-index.html

<!doctype html>
<html>
  <head>
    <title>Socket.IO chat</title>
    <style>
      * { margin: 0; padding: 0; box-sizing: border-box; }
      body { font: 13px Helvetica, Arial; }
      form { background: #000; padding: 3px; position: fixed; bottom: 0;     width: 100%; }
      form input { border: 0; padding: 10px; width: 90%; margin-right: .5%; }
      form button { width: 9%; background: rgb(130, 224, 255); border: none; padding: 10px; }
      #messages { list-style-type: none; margin: 0; padding: 0; }
      #messages li { padding: 5px 10px; }
      #messages li:nth-child(odd) { background: #eee; }
    </style>
  </head>
  <body>
    <ul id="messages"></ul>
    <form action="">
      <input id="m" autocomplete="off" /><button>Send</button>
    </form>
    <script src="/socket.io/socket.io.js"></script>
<script src="https://code.jquery.com/jquery-1.11.1.js"></script>
<script>
  $(function () {
    var socket = io();
    $('form').submit(function(){
      socket.emit('chatIN', $('#m').val());
      $('#m').val('');
      return false;
    });
socket.on('chatOUT', function(msg){
  $('#messages').append('<li><span>'+msg+'</span></li>');
    });
  });
</script>
</body>
</html>

And here is my index.js 这是我的index.js

var app = require('express')();
var http = require('http').Server(app);
var io = require('socket.io')(http);

app.get('/', function(req, res){
  res.sendFile(__dirname + '/index.html');
});

io.sockets.on('connection', function(socket){
    socket.on('chatIN', function(msg){
        console.log('message:'+ msg);
        socket.emit('chatOUT:'+ msg);
    });
    socket.on('disconnect', function(){
    console.log('user disconnected');
  });
});

http.listen(3000, function(){
  console.log('listening on *:3000');
});

I am facing a problem while trying out a socket.io beginner's tutorial, I followed this tutorial https://socket.io/get-started/chat/ 我在尝试socket.io初学者教程时遇到问题，我遵循了该教程https://socket.io/get-started/chat/

Everything seems to be okay till the very last thing, when they build a chat app, and when you hit submit in textbox, it updates the contents of the element. 直到最后一件事，一切都似乎还可以，当他们构建一个聊天应用程序时，当您在文本框中单击“提交”时，它将更新该元素的内容。

I can see the messages getting printed in the node js console, but nothing in chrome's console. 我可以在node js控制台中看到消息被打印出来，但是在chrome的控制台中什么都没看到。 I also tried debugging it using developer options, but the control just never goes in this method in the index.html. 我也尝试使用开发人员选项对其进行调试，但该控件从未在index.html中采用此方法。

socket.on('chat message', function(msg){

Can someone please help ? 有人可以帮忙吗？ I am really new to socket.io and nodejs. 我真的是socket.io和nodejs的新手。 Thanks 谢谢

Answer 1

You are sending the wrong message from the server. 您正在从服务器发送错误消息。

On the server, change this: 在服务器上，更改此：

socket.emit('chatOUT:'+ msg);

to this: 对此：

socket.emit('chatOUT', msg);

Your client code is listening for the chatOUT message so that's the exact message name need to send. 您的客户代码正在侦听chatOUT消息，因此这是需要发送的确切消息名称。 Here's the matching client code: 这是匹配的客户端代码：

socket.on('chatOUT', function(msg){...}

Socket.io事件未触发

问题描述

1 个解决方案

解决方案1
2 已采纳 2017-03-12 04:11:11

Socket.io事件未触发

问题描述

1 个解决方案

解决方案1 2 已采纳 2017-03-12 04:11:11

解决方案1
2 已采纳 2017-03-12 04:11:11