Çerez (Cooikes) eklentisi sunan güzel bir site yok mu?

<!DOCTYPE html>
<html>
<head>
    <title>Çerez Örneği</title>
    <link rel="stylesheet" type="text/css" href="styles.css">
    <script src="script.js"></script>
</head>
<body>
    <h1>Çerez Örneği</h1>
    <button onclick="setCookie()">Çerezi Ayarla</button>
    <button onclick="getCookie()">Çerezi Al</button>
</body>
</html>

function setCookie() {
    var cookieName = "kullanici";
    var cookieValue = "John Doe";
    var expirationDate = new Date();
    expirationDate.setFullYear(expirationDate.getFullYear() + 1);

    document.cookie = cookieName + "=" + cookieValue + "; expires=" + expirationDate.toUTCString() + "; path=/";
    alert("Çerez ayarlandı!");
}

function getCookie() {
    var cookieName = "kullanici";
    var cookies = document.cookie.split(";");

    for (var i = 0; i < cookies.length; i++) {
        var cookie = cookies[i];
        while (cookie.charAt(0) == " ") {
            cookie = cookie.substring(1);
        }
        if (cookie.indexOf(cookieName) == 0) {
            var cookieValue = cookie.substring(cookieName.length + 1);
            alert("Çerez değeri: " + cookieValue);
            return;
        }
    }
    alert("Çerez bulunamadı!");
}

h1 {
    color: blue;
}

button {
    padding: 10px 20px;
    margin: 10px;
}