third-party-cookie-popup.html

<html>

<body>
    <button id="write-btn">Write key 'window-entry' with value 'window-value' to localstorage</button>
    <div style="margin-top: 20px;">Storage events:</div>
    <div id="ls-logs"></div>
    <script>
        const lsLogs = document.getElementById('ls-logs');

        window.addEventListener('storage', (e) => {
            console.log('storage event', e)
            lsLogs.innerHTML = lsLogs.innerHTML + `
                    <div>
                        <b>${e.key}</b>: ${e.newValue}
                    </div>
                `;
        });

    </script>
</body>

</html>