How to use the Jquery Multi module?

Why you did double code wrap? Try to use:

(function($) {
    "use strict";
    $(document).ready(function() {

        /* *********************** */
        /* Mobile only Hamburger menu       */
        /* *********************** */
        $(".masthead .menu").on("click", function() {
            $(this).toggleClass('menu-close');
            $("body").toggleClass('menu-open');
            $(".masthead ul").toggleClass("animated bounceInDown");
            $(".masthead .tap-back").toggle();
       });
              });
})(jq213);

来自 http://drupal.stackexchange.com/questions/152801/how-to-use-the-jquery-multi-module