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index.html
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<!doctype html>
<html>
<head>
<title>Chat Controller</title>
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no" />
<script src="/socket.io/socket.io.js"></script>
<link rel="stylesheet" type="text/css" href="/styles.css" />
</head>
<body>
<h1 class = 'header'>Chat Room</h1>
<h3 class = 'header'>Powered by the CS Club</h3>
<div id="container">
<div id="messages" style = "text-align:center;"><b>Chat</b><br /></div>
<p contenteditable id="input" style="overflow-x: auto;"></p>
<button type="button" id="send" style = "font-family:'Comic Sans MS', cursive,sans-serif;">Send</button>
</div>
<script>
const socket = io('/chat');
let username = prompt("Enter a username");
let messageBox = document.querySelector("#messages");
let inputBox = document.querySelector("#input");
let sendButton = document.querySelector("#send");
sendButton.onclick = ()=>{
sendMessage();
}
inputBox.onkeydown = (event)=>{
if(event.which === 13 || event.charCode === 13){
event.preventDefault();
sendMessage();
}
}
socket.on('message_received', (message)=>{
messageBox.innerText += message.trim();
messageBox.innerHTML += "<br />"
messageBox.scrollTop = messageBox.scrollHeight;
});
function sendMessage(){
let message = inputBox.innerText;
inputBox.innerText = "";
socket.emit('message_sent', {
"username": username,
"body": message
});
}
</script>
</body>
</html>