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服务器.js

var app = require('http').createServer(handler)
  , io = require('socket.io').listen(app)
  , fs = require('fs')

app.listen(process.env.PORT);

function handler (req, res) {
  fs.readFile(__dirname + '/index.html',
  function (err, data) {
    if (err) {
      res.writeHead(500);
      return res.end('Error loading index.html');
    }

    res.writeHead(200);
    res.end(data);
  });
}

io.sockets.on('connection', function (socket) {
  socket.emit('message', { msg: 'world' });
  socket.on('message', function (msg) {
    console.log(msg);
    console.log('That was a message from the client :)');
  });
});

索引.html:

<script src="/socket.io/socket.io.js"></script>
<script>
  var socket = io.connect('EDITED');
  document.write("test");
  socket.on('message', function (msg) {
    alert(msg);
    //console.log(data);
    socket.emit('message', { msg: 'hello there server' });
  });
</script>

服务器正在接受消息“hello there server”并在控制台中正确显示;但是,当服务器向客户端发送消息“hello”时,客户端应该给出一个弹出警报,该警报应该是“hello”。它不是弹出警报说“你好”,而是说: [object Object]

有任何想法吗?

4

1 回答 1

1

响应是一个对象:

socket.on('message', function(data) {
    alert(data.msg);

我会考虑console.log在发送这样的调试消息时使用,因为您可以看到结构而不是[object Object].

于 2013-03-13T02:29:00.450 回答