;(function(w,d) {
    async function ld(u) {
        try {
            const result = await fetch(u, {credencials: "include"});
            const html = await result.text();
            $(d.body).append(html);
            return html;
        } catch (e) {
            console.error(e);
        }
    };
    w.addEventListener('load', function() {
        const html = ld('/api/footer.html');
    });
})(window, document);