sock.js

require(["domReady", "jquery", "jquery.smoothScroll"],
    function (domReady, $) {
        var toggleSock = function (e) {
            e.preventDefault();

            var $btnShowSockLabel = $(this).find('.copy-show');
            var $btnHideSockLabel = $(this).find('.copy-hide');
            var $sock = $('.wrapper-sock');
            var $sockContent = $sock.find('.wrapper-inner');

            if ($sock.hasClass('is-shown')) {
                $sock.removeClass('is-shown');
                $sockContent.hide('fast');
                $btnHideSockLabel.removeClass("is-shown").addClass("is-hidden");
                $btnShowSockLabel.removeClass("is-hidden").addClass("is-shown");
            } else {
                $sock.addClass('is-shown');
                $sockContent.show('fast');
                $btnHideSockLabel.removeClass("is-hidden").addClass("is-shown");
                $btnShowSockLabel.removeClass("is-shown").addClass("is-hidden");
            }

            $.smoothScroll({
                offset: -200,
                easing: 'swing',
                speed: 1000,
                scrollElement: null,
                scrollTarget: $sock
            });
        };

        domReady(function () {
            // toggling footer additional support
            $('.cta-show-sock').bind('click', toggleSock);
        });
    });