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index.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width" />
<title>MongoChat</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">
<style type="text/css" media="screen">
#messages {
height: 300px;
}
</style>
</head>
<body>
<div class="container">
<div class="row">
<div class="col-md-6 offset-md-3 col-sm-12">
<h1 class="text-center">
MongoChat
<button id="clear" class="btn
btn-danger">Clear</button>
</h1>
<div id="status"></div>
<div id="chat">
<input id="username" class="form-control form-control-lg" type="text" placeholder="Enter name...">
<br/>
<div class="card">
<div id="messages" class="card-block">
</div>
</div>
<br/>
<textarea id="userInput" class="form-control" placeholder="Enter Message..." cols="30" rows="10"></textarea>
<h4>Testing</h4>
</div>
</div>
</div>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/2.0.4/socket.io.js"></script>
<script charset="utf-8">
(function() {
let element = function(id) {
return document.getElementById(id);
};
//get elements
let status = element('status');
let messages = element('messages');
let userInput = element('userInput');
let username = element('username');
let clearBtn = element('clear');
//set default status
let statusDefault = status.textContent;
let setStatus = function(s) {
//set status
status.textContent = s;
if (s !== statusDefault) {
let delay = setTimeout(function() {
setStatus(statusDefault);
}, 4000);
}
};
//connect to socketio
let socket = io.connect('http://127.0.0.1:4000');
//Check for connection
if (socket !== undefined) {
console.log("Connected to Socket");
//handle output
socket.on('output', (data) => {
//console.log(data);
if (data.length) {
for (let chat in data) {
let message = document.createElement('div');
message.setAttribute('class', 'chat-message');
message.textContent = data[chat].name + ": " + data[chat].message;
messages.appendChild(message);
messages.insertBefore(message, messages.firstChild);
}
}
});
//Get status from server
socket.on('status', (data) => {
//get message status
setStatus((typeof data === 'object') ? data.message : data);
//If status is clear, clear text
if (data.clear) {
userInput.value = "";
}
});
//Handle Input
userInput.addEventListener('keydown', function(event) {
if (event.which === 13 && event.shiftKey == false) {
//emit to server input
socket.emit('input', {
name: username.value,
message: userInput.value
});
event.preventDefault();
}
});
//handle chat clearing
clearBtn.addEventListener('click', function() {
socket.emit('clear');
});
//clear chat
socket.on('cleared', function() {
messages.textContent = '';
});
}
})();
</script>
</body>
</html>