swiperのサムネイルを1枚の時は表示させない

Question

<div class="swiper-container gallery-top slider1">
    <div class="swiper-wrapper">
      <div class="swiper-slide"><img src="images/slide001.jpg" alt=""/></div>
      <div class="swiper-slide"><img src="images/slide002.jpg" alt=""/></div>
    <div class="swiper-slide"><img src="images/slide003.jpg" alt=""/></div>
        <div class="swiper-slide"><img src="images/slide004.jpg" alt=""/></div>
        <div class="swiper-slide"><img src="images/slide005.jpg" alt=""/></div>
        <div class="swiper-slide"><img src="images/slide006.jpg" alt=""/></div>
    </div>
    <!-- Add Arrows -->
    <div class="swiper-button-next swiper-button-white"></div>
    <div class="swiper-button-prev swiper-button-white"></div>
  </div>
  <div class="swiper-container gallery-thumbs slider1">
    <div class="swiper-wrapper">
        <div class="swiper-slide"><img src="images/slide001.jpg" alt=""/></div>
        <div class="swiper-slide"><img src="images/slide002.jpg" alt=""/></div>
        <div class="swiper-slide"><img src="images/slide003.jpg" alt=""/></div>
        <div class="swiper-slide"><img src="images/slide004.jpg" alt=""/></div>
        <div class="swiper-slide"><img src="images/slide005.jpg" alt=""/></div>
        <div class="swiper-slide"><img src="images/slide006.jpg" alt=""/></div>
    </div>
  </div>

var galleryThumbs1 = new Swiper('.gallery-thumbs.slider1', {
      spaceBetween: 10,
      slidesPerView: 5,
      freeMode: true,
      watchSlidesVisibility: true,
      watchSlidesProgress: true,
    });
    var galleryTop = new Swiper('.gallery-top.slider1', {
      spaceBetween: 10,
      navigation: {
        nextEl: '.swiper-button-next',
        prevEl: '.swiper-button-prev',
      },
      thumbs: {
        swiper: galleryThumbs1
      }
    });

wordressで写真を追加させる予定です。

現在上記の記述でサムネイルが表示され問題なく実装しています。
しかし、１枚のだけ投稿された場合にはサムネイルは部分(.gallery-thumbs)は表示させないようにしたいのですが、記述方法がわかりません。

ご教授願います。

Answer 1

if (document.querySelectorAll('.gallery-thumbs.slider1 .swiper-slide').length > 1) {などとして場合分けをしてはどうでしょうか？