我是 Node.js 和 Socket.IO 的新手，我想尝试一下解释的示例
https://socket.io/get-started/chat/ https://socket.io/get-started/chat/
我做了我必须做的一切，它起作用了：我打开了两个选项卡，消息出现在两个客户端中，但由于某种原因，它们在 5/6 秒后出现（有时甚至更晚）。
你们知道为什么吗（我使用的是Windows 10）？
这是index.js文件代码：
var app = require('express')();
var http = require('http').createServer(app);
var io = require('socket.io')(http);
var port = process.env.PORT || 3000;
app.get('/', function(req, res){
res.sendFile(__dirname + '/index.html');
});
io.on('connection', function(socket){
socket.on('chat message', function(msg){
console.log(msg)
socket.emit('chat message', msg);
});
});
http.listen(port, function(){
console.log('listening on *:' + port);
});
这是html代码：
<!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;
}
#messages {
margin-bottom: 40px
}
</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>
var socket = io();
$(function () {
$('form').submit(function () {
socket.emit('chat message', $('#m').val());
$('#m').val('');
return false;
});
socket.on('chat message', function (msg) {
$('#messages').append($('<li>').text(msg));
window.scrollTo(0, document.body.scrollHeight);
});
});
</script>
</body>
</html>
这是package.json：
{
"name": "socket-example",
"version": "0.0.1",
"description": "my first socket.io app",
"dependencies": {
"engine.io": "^3.1.5",
"express": "^4.15.2",
"socket.io": "^2.0.4"
}
}
