使用nodejs引用socket.io做聊天室
Server:
var app = require('http').createServer(handler)
, io = require('socket.io').listen(app)
, fs = require('fs');
app.listen(80);
console.log('server listen on port 80');
function handler (req, res) {
fs.readFile(__dirname + '/public/index.html',
function (err, data) {
if (err) {
res.writeHead(500);
return res.end('Error loading index.html');
}
res.writeHead(200);
res.end(data);
});
}
var chatroom=io.of('/chat').on('connection',function(socket){
console.log(id+'connected');
var id=null;
socket.on('setid',function(sid){
id=sid;
socket.emit('id',id);
chatroom.emit('msg',id+' join the chatroom');
});
socket.on('msg',function(msg){
chatroom.emit('msg',id+' : '+msg);
});
})Client:
<!doctype html>
<html>
<head>
<title>socket.io</title>
<script type="text/javascript" src="/socket.io/socket.io.js"></script>
<style type="text/css">
body{
font: message-box;
}
#output{
height:200px;
border:1px solid #888;
overflow-y: scroll;
}
</style>
</head>
<body>
<div ></div>
<span ></span>
<input type="text" placeholder='input your name'>
<button >connect</button>
<script type="text/javascript">
var socket = null;
var btn=document.getElementById('btn');
var text=document.getElementById('text');
var output=document.getElementById('output');
btn.onclick=function(e){
console.log('btn click');
socket = io.connect('http://localhost/chat');
socket.on('connect',function(){
console.log('connect');
socket.emit('setid',text.value);
socket.on('id',function(id){
document.getElementById('userid').innerText=id+':';
});
socket.on('msg',function(msg){
output.innerText+=(msg+'\n');
output.scrollTop=output.scrollHeight;
});
btn.innerText='send';
text.placeholder='input msg';
text.value='';
btn.onclick=function(e){
socket.emit('msg',text.value);
text.value='';
}
});
};
</script>
</body>
</html>