Fehler in HTML <a mit onclick

    <div style="text-align: center; font-size: 13px; margin-top: 10px;">

        <a onclick="popupCenter({ url: 'thread1404-onclick-event.html', title: 'Popup', w: 350, h: 750 });">

            <strong>NN</strong>

        </a>

        <br />

        <a href="#ort">Ort</a> (Südost)

    </div>

    <script>

        const popupCenter = ({ url, title, w, h }) => {

            const dualScreenLeft = window.screenLeft !== undefined ? window.screenLeft : window.screenX;

            const dualScreenTop = window.screenTop !== undefined ? window.screenTop : window.screenY;

            const width = window.innerWidth || document.documentElement.clientWidth || screen.width;

            const height = window.innerHeight || document.documentElement.clientHeight || screen.height;

            const systemZoom = width / window.screen.availWidth;

            const left = (width - w) / 2 / systemZoom + dualScreenLeft;

            const top = (height - h) / 2 / systemZoom + dualScreenTop;




            const newWindow = window.open(url, title, `scrollbars=yes, width=${w / systemZoom}, height=${h / systemZoom}, top=${top}, left=${left}`);




            if (window.focus) {

                newWindow.focus();

            }

        };

    </script>