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index.html
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index.html
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<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<title>RealTime Chat</title>
<style>
#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">
RealTime Chat
<button id="clear" class="btn btn-danger">Clear All</button>
</h1>
<div id="status"></div>
<div id="chat">
<input type="text" id="userName" class="form-comntrol" placeholder="Enter name...">
<br>
<div class="card">
<div id="messages" class="card-block">
</div>
</div>
<br>
<textarea class="form-comntrol" id="textarea" placeholder="Enter message..." ></textarea>
</div>
</div>
</div>
</div>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/2.1.1/socket.io.js"></script>
<script>
(() => {
var element = (id) => {
return document.getElementById(id)
}
// get element
var status = element('status')
var messages = element('messages')
var textarea = element('textarea')
var userName = element('userName')
var clearBtn = element('clear')
//set default status
var statusDefault = status.textContent
var setStatus = (s) => {
// set status
status.textContent = s
if(s !== statusDefault){
var delay = setTimeout(() => {
setStatus(statusDefault)
}, 4000)
}
}
// connect to socket.io
var 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){
data.forEach(element => {
//build out message div
var message = document.createElement('div')
message.setAttribute('class', 'chat-message')
message.textContent = element.name + ": "+ element.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){
textarea.value = ''
}
})
// handle input
textarea.addEventListener('keydown', (event) => {
if(event.which === 13 && event.shiftKey == false){
//emit to server input
// console.log(textarea.value)
socket.emit('input', {
name: userName.value,
message: textarea.value
})
event.preventDefault()
}
})
// emit is for input, on is for output depend on perspective
//handle clear btn
clearBtn.addEventListener('click', () => {
socket.emit('clear')
})
socket.on('cleared', () => {
messages.textContent = ''
})
}
})();
</script>
</body>
</html>