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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<title>MongoChat</title>
<style>
#messenges{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 type="text" id="username" class="form-control" placeholder="Enter Name">
<br>
<div class="card">
<div id="messenges" class="card-block">
</div>
</div>
<br>
<textarea id="textarea" class="form-control" placeholder="Enter messenge"></textarea>
</div>
</div>
</div>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/2.1.1/socket.io.js"></script>
<script>(()=> {
let element = function(id) {
return document.getElementById(id);
}
//Get Element
let status = element('status');
let messenges = element('messenges');
let textarea = element('textarea');
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(() => {
setStatus(statusDefault);
}, 4000);
}
}
//connect to socket.io
let socket = io.connect('http://localhost: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 x = 0; x < data.length; x++){
//Build out message div
let message = document.createElement('div');
message.setAttribute('class', 'chat-message');
message.textContent = data[x].name + ": " + data[x].message;
messenges.appendChild(message);
messenges.insertBefore(message, messenges.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
socket.emit('input', {
name: username.value,
message: textarea.value
});
event.preventDefault();
}
})
//Handle chat clear
clearBtn.addEventListener('click', () => {
socket.emit('clear');
});
//clear message
socket.on('cleared', () => {
messenges.textContent = '';
})
}
})();</script>
</body>
</html>