一页上有多个猫头鹰轮播，键盘导航

Question

一页上有多个猫头鹰轮播，键盘右箭头键可同时更改所有轮播的幻灯片。我需要它来更新可见的一个轮播

    var projecten = $(".owl-carousel");


projecten.each(function() {

  var $this = $(this);

  $this.owlCarousel({
       responsiveRefreshRate: 1,
        loop: true,
        margin: 10,
        responsiveClass: true,
        items: 1,
        nav: true,
        dots: false,
        autoplay: false,
        autoplayTimeout: 6000,
        smartSpeed: 750,
        mouseDrag:'true',
        pullDrag:'true',
        animateIn: 'fadeIn', 
        animateOut: 'fadeOut'
  });

$(document.documentElement).keyup(function (event) {    

       var owl = $(".owl-carousel");

        // handle cursor keys
        if (event.keyCode == 37) {
           // go left
           owl.trigger('prev.owl');
        } else if (event.keyCode == 39) {
           // go right
           owl.trigger('next.owl');
        }
    });