איך למשוך דינמית favicon של אתרים אחרים ב-JS

<div class="container">
            <h1>faviconjs Demo</h1>
            <a class="favicon" href="https://facebook.com">facebook.com</a>
            <a class="favicon" href="https://twitter.com">twitter.com</a>
            <a class="favicon" href="https://google.com">google.com</a>
            <a class="favicon" href="http://www.jqueryscript.net">jQueryScript.net</a>
            <a class="favicon" href="https://webration.net">Webration</a>
            <a class="favicon" href="https://codcodile.co.il">codcodile</a>
            <a class="favicon" href="https://ynet.co.il">ynet</a>
            <a class="favicon" href="https://walla.co.il">walla</a>
            <a class="favicon" href="https://msn.com">msn</a>
            <a class="favicon" href="https://linkedin.com">linkedin</a>
        </div>

  .favicon-img {
            height: 16px;
            margin: 0 4px;
            vertical-align: text-bottom;
        }

  function faviconInit() {
            var faviconLinks = document.getElementsByClassName("favicon");
            var fileTypes = ['ico', 'png', 'jpg'];

            var creatImg = () => {
                var favicon = document.createElement("img");
                favicon.className = "favicon-img";
                return favicon;
            }

            var urlToDomain = (url) => {
                var parserA = document.createElement('a');
                parserA.href = url;
                return parserA.protocol + "//" + parserA.hostname + "/";
            }

            var checkImg = (url, callback) => {
                var imgFav = new Image();
                imgFav.src = url;
                if (imgFav.complete) {
                    callback({ status: true, url: url });
                } else {
                    imgFav.onload = () => {
                        callback({ status: true, url: url });
                    };

                    imgFav.onerror = () => {
                        callback({ status: false, url: url });
                    };
                }
            }

            var faviconUrl = (domain, fTypes, element) => {
                for (let i = 0; i < fTypes.length; i++) {
                    var url = domain + "favicon." + fTypes[i];
                    checkImg(url, (exists) => {
                        if (exists.status) {
                            var img = creatImg();
                            img.src = exists.url;
                            element.insertBefore(img, element.firstChild);
                        }
                    });
                }
            }

            for (let idx = 0; idx < faviconLinks.length; idx++) {
                var domain = urlToDomain(faviconLinks[idx].href);
                faviconUrl(domain, fileTypes, faviconLinks[idx]);
            }


        }
        faviconInit();