javascript - onClick anchor 标记当前 div 使用 jquery 显示

Question

我在这里处理图片库 我希望 onClick anchor 标记当前图像在 .gallery-container 中显示不起作用。之前在图像 img 上单击，我得到了输出 .gallery-column img。

$('.gallery-column img').on('click', function(){
    var expandImg = document.getElementById('expandedImg');
    expandImg.src = this.src;
    expandImg.parentElement.style.display = "block";
    var imageCaption = $(this).next("div").html();
    $("#expandedImgCaption").html(imageCaption);
});

这段代码运行良好。现在我添加了 anchor ，但它不起作用。 我已经尝试过但无法实现。

有人可以推荐我吗？

$(document).ready(function() {
  var carouselImg = document.getElementsByClassName('carousel-img');
  $('a.post-carousel').on('click', function() {
    var expandImg = document.getElementById('expandedImg');
    var carouselImg = document.getElementsByClassName('carousel-img');
    expandImg.src = carouselImg.src;

    expandImg.parentElement.style.display = "block";
    var imageCaption = $(this).next("div").html();
    $("#expandedImgCaption").html(imageCaption);
  });
});

* {
  box-sizing: border-box;
}

.gallery-wrap {
  width: 50%;
  height: 1066px;
  margin: 0 auto;
  display: flex;
}

.gallery-row {
  width: 52%;
  max-height: 497px;
}

.gallery-column {
  position: relative;
  padding: 10px;
}

.img-caption {
  position: absolute;
  bottom: 10%;
}

.gallery-column img {
  width: 100%;
  opacity: 0.8;
  cursor: pointer;
}

.gallery-column img:hover {
  opacity: 1;
}

.gallery-container {
  position: relative;
  width: 90%;
  height: 500px;
}

#expandedImg {
  width: 100%;
  height: 100%;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>
<div class="gallery-wrap">

  <div class="gallery-container" style="display: block;">
    <a href="#" class="post-carousel">
      <img id="expandedImg" src="https://images.unsplash.com/photo-1542648108-66d2937f4bcf?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=5ebbcae6a8310fd61d8a9fc82b79c792&auto=format&fit=crop&w=500&q=60" class="carousel-img">
      <div class="img-caption">
        <h3>Still more than 2 Millions+ people using</h3>
      </div>
    </a>
  </div>

  <div class="gallery-row">
    <div class="gallery-column">
      <a href="#" class="post-carousel">
        <img src="https://images.unsplash.com/photo-1542648108-66d2937f4bcf?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=5ebbcae6a8310fd61d8a9fc82b79c792&auto=format&fit=crop&w=500&q=60" alt="" class="carousel-img">
        <div class="img-caption">
          <h3>Still more than 2 Millions+ people using</h3>
        </div>
      </a>
    </div>
    <div class="gallery-column">
      <a href="#" class="post-carousel">
        <img src="https://images.unsplash.com/photo-1542646822891-0a8451fce513?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=181de57e88385f8f32f48aef4e2831f9&auto=format&fit=crop&w=500&q=60" alt="" class="carousel-img">
        <div class="img-caption">
          <h3>olor sit amet, consectetur adipiscing elit. Donec</h3>
        </div>
      </a>
    </div>
    <div class="gallery-column">
      <a href="#" class="post-carousel">
        <img src="https://images.unsplash.com/photo-1542632890661-441e6f424098?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=60444a082924abcdc72901abaa800620&auto=format&fit=crop&w=500&q=60" alt="" class="carousel-img">
        <div class="img-caption">
          <h3>sit amet, consectetur adipiscing elit. Donec</h3>
        </div>
      </a>
    </div>
    <div class="gallery-column">
      <a href="#" class="post-carousel">
        <img src="https://images.unsplash.com/photo-1542635521008-f80f4d69bad4?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=a6e7baa2e8b1e236090d116d35bf0855&auto=format&fit=crop&w=500&q=60" alt="" class="carousel-img">
        <div class="img-caption">
          <h3>nsectetur adipiscing elit. Donec</h3>
        </div>
      </a>
    </div>

  </div>
</div>

Answer 1

尝试按以下方式使用this:

$(document).ready(function() {
  var carouselImg = document.getElementsByClassName('carousel-img');
  $('a.post-carousel').on('click', function() {
    var expandImg = document.getElementById('expandedImg');
    expandImg.src = $(this).find('img').attr('src');

    var imageCaption = $(this).find('.img-caption > h3').text();
    $('.gallery-container').find('.img-caption > h3').text(imageCaption);
  });
});

* {
  box-sizing: border-box;
}
.gallery-wrap {
  width: 50%;
  height: 1066px;
  margin: 0 auto;
  display: flex;
}

.gallery-row {
  width: 52%;
  max-height: 497px;
}

.gallery-column {
  position: relative;
  padding: 10px;
}

.img-caption {
  position: absolute;
  bottom: 10%;
}

.gallery-column img {
  width: 100%;
  opacity: 0.8;
  cursor: pointer;
}

.gallery-column img:hover {
  opacity: 1;
}

.gallery-container {
  position: relative;
  width: 90%;
  height: 500px;
}

#expandedImg {
  width: 100%;
  height: 100%;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="gallery-wrap">

  <div class="gallery-container" style="display: block;">
    <a href="#" class="post-carousel">
      <img id="expandedImg" class="img-caption" src="https://images.unsplash.com/photo-1542648108-66d2937f4bcf?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=5ebbcae6a8310fd61d8a9fc82b79c792&auto=format&fit=crop&w=500&q=60" class="carousel-img">
      <div class="img-caption">
        <h3>Still more than 2 Millions+ people using</h3>
      </div>
    </a>
  </div>

  <div class="gallery-row">
    <div class="gallery-column">
      <a href="#" class="post-carousel">
        <img src="https://images.unsplash.com/photo-1542648108-66d2937f4bcf?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=5ebbcae6a8310fd61d8a9fc82b79c792&auto=format&fit=crop&w=500&q=60" alt="" class="carousel-img">
        <div class="img-caption">
          <h3>Still more than 2 Millions+ people using</h3>
        </div>
      </a>
    </div>
    <div class="gallery-column">
      <a href="#" class="post-carousel">
        <img src="https://images.unsplash.com/photo-1542646822891-0a8451fce513?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=181de57e88385f8f32f48aef4e2831f9&auto=format&fit=crop&w=500&q=60" alt="" class="carousel-img">
        <div class="img-caption">
          <h3>olor sit amet, consectetur adipiscing elit. Donec</h3>
        </div>
      </a>
    </div>
    <div class="gallery-column">
      <a href="#" class="post-carousel">
        <img src="https://images.unsplash.com/photo-1542632890661-441e6f424098?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=60444a082924abcdc72901abaa800620&auto=format&fit=crop&w=500&q=60" alt="" class="carousel-img">
        <div class="img-caption">
          <h3>sit amet, consectetur adipiscing elit. Donec</h3>
        </div>
      </a>
    </div>
    <div class="gallery-column">
      <a href="#" class="post-carousel">
        <img src="https://images.unsplash.com/photo-1542635521008-f80f4d69bad4?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=a6e7baa2e8b1e236090d116d35bf0855&auto=format&fit=crop&w=500&q=60" alt="" class="carousel-img">
        <div class="img-caption">
          <h3>nsectetur adipiscing elit. Donec</h3>
        </div>
      </a>
    </div>

  </div>
</div>