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index.html
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<!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>
<div id="nickwrap">
<form id="nameform" action="">
<p>Enter you name</p>
<p id="nameError"></p>
<input id="name" autocomplete="off" /><button>Enter</button>
</form>
</div>
<div id="content" style="display: none;">
<div style="float: left; width: 500px;">
<ul id="messages" style="height: 500px;"></ul>
<form id="mform" action="">
<input id="m" autocomplete="off" /><button>Send</button>
</form>
</div>
<div>
<b>Online users</b>
<div id="users"></div>
</div>
</div>
<script src="https://cdn.socket.io/socket.io-1.2.0.js"></script>
<script src="http://code.jquery.com/jquery-1.11.1.js"></script>
<script>
var socket = io();
$('#nameform').submit(function(){
socket.emit('new user', $('#name').val(),function(callback){
if (callback) {
$('#nickwrap').hide();
$('#content').show();
}
else{
$('#nameError').html('Username already taken! try again');
}
});
return false;
});
$('#mform').submit(function(){
socket.emit('chat message', $('#m').val());
$('#m').val('');
return false;
});
socket.on('chat message', function(data){
$('#messages').append($('<li>').html('<b>'+data.name+':</b>'+ data.msg));
});
//Show online users
socket.on('usernames',function(data){
var html = '';
for(i=0;i<data.length;i++)
{
html += data[i] + '<br/>';
}
$('#users').html(html);
});
</script>
</body>
</html>