Function updateThemeSelected

docs/book.js:304–309

()

    }

    function updateThemeSelected() {
        themePopup.querySelectorAll('.theme-selected').forEach(function (el) {
            el.classList.remove('theme-selected');
        });
        themePopup.querySelector("button#" + get_theme()).classList.add('theme-selected');
    }

    function hideThemes() {
        themePopup.style.display = 'none';