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index.html
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<!DOCTYPE html>
<html>
<head>
<title>Shine's ChatIO</title>
<style>
body {
background: #f9f9f9;
}
.hide {
display: none;
}
.flt {
float: left;
}
.flr {
float: right;
}
#container {
width: 700px;
margin: 0 auto;
}
#chatWindow {
height: 300px;
overflow: scroll;
}
#mainWrapper {
display: none;
}
#chatWrapper {
float: left;
border: 1px #ccc solid;
border-radius: 10px;
background: #f4f4f4;
padding: 10px;
}
#userWrapper {
float: left;
border: 1px #ccc solid;
border-radius: 10px;
background: #f4f4f4;
padding: 10px;
margin-left: 20px;
width: 150px;
max-height: 200px;
}
#namesWrapper {
float: left;
border: 1px #ccc solid;
border-radius: 10px;
background: #f4f4f4;
padding: 10px;
margin-left: 20px;
}
input {
height: 30px;
}
</style>
</head>
<body>
<div id="container">
<div id="namesWrapper">
<h2>Abhi's ChatIO</h2>
<p>Create Username:</p>
<div id="error"></div>
<form id="usernameForm">
<input size="35" id="username" />
<input type="submit" value="Submit" />
</form>
</div>
<div id="mainWrapper">
<h2>Abhi's ChatIO</h2>
<div id="chatWrapper">
<div id="chatWindow"></div>
<form id="messageForm">
<input size="35" id="message" placeholder="Type Something" />
<input type="submit" value="Say It!" />
</form>
</div>
<div id="userWrapper">
<div id="users"></div>
</div>
</div>
</div>
<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
<script src="/socket.io/socket.io.js"></script>
<script>
$(function () {
var socket = io.connect();
var $messageForm = $("#messageForm");
var $message = $("#message");
var $chat = $("#chatWindow");
var $usernameForm = $("#usernameForm");
var $users = $("#users");
var $username = $("#username");
var $error = $("#error");
$usernameForm.submit(function (e) {
e.preventDefault();
socket.emit("new user", $username.val(), function (data) {
if (data) {
$("#namesWrapper").hide();
$("#mainWrapper").show();
} else {
$error.html("Username is already taken");
}
});
$username.val("");
});
socket.on("usernames", function (data) {
var html = "";
for (i = 0; i < data.length; i++) {
html += data[i] + "<br />";
}
$users.html(html);
});
$messageForm.submit(function (e) {
e.preventDefault();
socket.emit("send message", $message.val());
$message.val("");
});
socket.on("new message", function (data) {
$chat.append(
"<strong>" + data.user + "</strong>: " + data.msg + "<br />"
);
});
});
</script>
</body>
</html>