function updateAnchorActive()

in src/assets/js/main.js [1214:1224]


    function updateAnchorActive() {
      $anchors.removeClass('is-in-view');
      $anchors.each(function () {
        var $self = $(this);
        var $el = $($self.attr('href'));
        if ($el.length && isInFocus($el, 0.75)) {
          $anchors.removeClass('is-in-view');
          $self.addClass('is-in-view');
        }
      });
    }