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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-0evHe/X+R7YkIZDRvuzKMRqM+OrBnVFBL6DOitfPri4tjfHxaWutUpFmBp4vmVor" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.3.1.min.js" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/umd/popper.min.js" integrity="sha384-wHAiFfRlMFy6i5SRaxvfOCifBUQy1xHdJ/yoi7FRNXMRBu5WHdZYu1hA6ZOblgut" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.min.js" integrity="sha384-B0UglyR+jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k" crossorigin="anonymous"></script>
<script src="socket.io/socket.io.js"></script>
<!-- JavaScript Bundle with Popper -->
<title>Document</title>
</head>
<body>
<div class="container">
<div class="jumbotron">
<h1 class="display-4">Send message</h1>
<br>
<input id="name", class="form-control" placeholder="Name">
<br>
<textarea id="message", class="form-control" placeholder="message"></textarea>
<br>
<button id="send" class="btn btn-success">Send</button>
</div>
<div id="messages" class="jumbotron jumbotron-fluid">
</div>
</div>
</body>
<script>
const socket = io()
$(()=> {
//button callback
$("#send").click(()=>{
// hndling click events
const message = {name: $("#name").val(), message: $("#message").val()}
postMessage(message)
})
getMessages()
})
socket.on('message', addMessage)
//displaying data
function addMessage(message){
$("#messages").append(`<h4>${message.name}</h4> <p>${message.message}</p>`)
}
//get data from a url using jquery
function getMessages(){
$.get('http://localhost:3000/messages', (data)=>{
data.forEach(addMessage)
})
}
//post data to a url using jquery
function postMessage(message){
$.post('http://localhost:3000/messages', message)
}
</script>
</html>