jQuery plugin for autohiding navigation

autohider.js

(function($) {
  /* Autohider by Aaron Petcoff https://gist.github.com/aptkf/1a5ffdad876a80610b63 */
  
  $.fn.autohider = function(args) {

    defaults = {
      toggle: "visible",
      buffer:70,
      tolerance: 8
    };

    args = $.extend(defaults, args);

    return this.each(function() {
      
      var last;
      var $this = $(this);

      $(window).scroll(function() {

        var current = $(this).scrollTop();

        if(current > last && current >= args.buffer) {
          // scrolling down and past the buffer
          $this.removeClass(args.toggle);
        } else if (last - current > args.tolerance) {
          // scrolling up past the tolerance level
          $this.addClass(args.toggle);
        }

        // record last scroll position
        last = current;
      });
    });
  };
})(jQuery);

main.css

/* Example CSS implementation */
/* Make sure to include vendor prefixes or use a preprocessor like autoprefixer to handle vendor prefixing https://github.com/postcss/autoprefixer */

.nav {
  position: fixed;
  z-index: 10;
  width: 100%;
  height:3.7rem;
  background-color:rgba(255,255,255,.55);
  transform:translateY(-3.7rem);
  transition:transform 0.35s ease;
}

.visible {
  transform:translateY(0);
  transition:transform 0.35s ease;
}

site.js

/* Example usage */

$(document).ready(function() {
  
  // with default settings
  $(".nav").autohider();
  
  // with custom settings
  $(".nav").autohider({
    tolerance:0,
    buffer:0
  });
});