index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel
</head>
    <input id="name" placeholder="write your name">
    <br>
    <input id="message"></input>
    <button id="b1">send</button>
    <div id="container"></div>
    <script>
        const button = document.getElementById('b1');
        const message = document.getElementById('message');
        const container = document.getElementById('container');
        const name = document.getElementById('name');
        button.onclick = () => {
            let value = message.value;
            console.log(value);
            fetch("http://localhost:3001/send/" + (name.value !== "" ? (name.value + ":") : "") + message.value);
        }
        setInterval(()=>{
            fetch("http://localhost:3001/get").then((res)=>{
                return res.json();
            }).then((jsonData)=>{
                console.log(jsonData);
                let chat = jsonData.chat;
                container.innerHTML = chat;
            })
        }, 1000);
        console.log();
    </script>
</body>
</html>