javascript - Owl carousel locating divs

Question

i am using owl carousel 2, where i am using the center function. I have 5 items to be displayed on the carousel. Is it possible using jquery to add classes to find certain divs within the carousel, without having to add ids or classes on the div. http://owlcarousel.owlgraphic.com/demos/center.html

heres my html

<div class="owl-carousel">
  <div class="product"> Your Content </div>
  <div class="product"> Your Content </div>
  <div class="product"> Your Content </div>
  <div class="product"> Your Content </div>
  <div class="product"> Your Content </div>
  <div class="product"> Your Content </div>
  <div class="product"> Your Content </div>
</div>

heres my js

$(document).ready(function () {
$(".owl-carousel").owlCarousel({
    center: true,
    items:5,
    loop:true,
    margin:0,
    responsive:{
        600:{
            items:5
        }
    },
    nav:true

});


});

What i want if you were to view the actual carousel on live would be the addition of these two classes "a" and "b"

<div class="owl-carousel">
  <div class="product"> Your Content </div>
  <div class="product b"> Your Content </div>
  <div class="product a"> Your Content </div>
  <div class="product center"> Your Content </div>
  <div class="product a"> Your Content </div>
  <div class="product b"> Your Content </div>
  <div class="product"> Your Content </div>
</div>

so i am basically trying to locate the divs next to center and the second div next to center

Answer 1

你去吧，在 1 分钟的试用中：

$("#owlSlider").owlCarousel({
  navigation : false,
  autoPlay:true,
  afterMove : function (elem) {
    var lng = $('.product').length,
        a = [],
        b = [];
    if(!!$('.center').length) {
      $('.a, .b').removeClass('a b');
      a.push($('.center').index()-1>=0?$('.center').index()-1:lng-1);
      a.push($('.center').index()+1<lng?$('.center').index()+1:0);
      b.push($('.center').index()-2>=0?$('.center').index()-2:lng-2);
      b.push($('.center').index()+2<lng?$('.center').index()+2:$('.center').index()+2-lng);
      a.forEach(function(item){
        $('.product:eq('+item+')').addClass('a');
      });
      b.forEach(function(item){
        $('.product:eq('+item+')').addClass('b');
      });
    }
  }
});

住在这里：http ://codepen.io/raduchiriac/pen/doLQdg?editors=101

接下来就是稍微优化一下，因为它非常非常难看。