Question

在寻找一种简洁，美观且有效的“阅读更多/阅读较少”功能时，我设法找到了以下代码。该代码可以正常工作，并且可以在同一页面上多次使用（我真正需要的）。

这段代码有一个反斜杠。我还需要显示/隐藏几张图像，这些代码将隐藏 But ，“显示更多/更少”按钮将根据图像的大小移动，这实际上不是我所需要的。

我看不到如何修改此代码，因此它也可以隐藏图像。

问题可以在以下JSFiddle中看到：https://jsfiddle.net/xrtxqu94/16/

CSS

.read-more-state {
  display: none;
}

.read-more-target {
  opacity: 0;
  max-height: 0;
  font-size: 0;
  transition: .25s ease;
}

.read-more-state:checked ~ .read-more-wrap .read-more-target {
  opacity: 1;
  font-size: inherit;
  max-height: 999em;
}

.read-more-state ~ .read-more-trigger:before {
  content: 'Show more';
}

.read-more-state:checked ~ .read-more-trigger:before {
  content: 'Show less';
}

.read-more-trigger {
  cursor: pointer;
  display: inline-block;
  padding: 0 .5em;
  color: #666;
  font-size: .9em;
  line-height: 2;
  border: 1px solid #ddd;
  border-radius: .25em;
}

HTML

<input type="checkbox" class="read-more-state" id="post-1" />
<div class="read-more-wrap">
  What is Lorem Ipsum? Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type
  specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently
  with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
  <span class="read-more-target">Why do we use it?
<p>It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using 'Content here, content here', making it look like readable English. Many desktop publishing packages and web page editors now use Lorem Ipsum as their default model text, and a search for 'lorem ipsum' will uncover many web sites still in their infancy. Various versions have evolved over the years, sometimes by accident, sometimes on purpose (injected humour and the like).</p>
<img src="https://images.pexels.com/photos/67636/rose-blue-flower-rose-blooms-67636.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" height="auto" width="250px" />

<p>Where does it come from?
Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked up one of the more obscure Latin words, consectetur, from a Lorem Ipsum passage, and going through the cites of the word in classical literature, discovered the undoubtable source. Lorem Ipsum comes from sections 1.10.32 and 1.10.33 of "de Finibus Bonorum et Malorum" (The Extremes of Good and Evil) by Cicero, written in 45 BC. This book is a treatise on the theory of ethics, very popular during the Renaissance. The first line of Lorem Ipsum, "Lorem ipsum dolor sit amet..", comes from a line in section 1.10.32.</p>

The standard chunk of Lorem Ipsum used since the 1500s is reproduced below for those interested. Sections 1.10.32 and 1.10.33 from "de Finibus Bonorum et Malorum" by Cicero are also reproduced in their exact original form, accompanied by English versions from the 1914 translation by H. Rackham.</span></div>
<label for="post-1" class="read-more-trigger"></label>

CSS解决方案

感谢Logiwan，将图像高度设置为0和auto可使图像作为文本工作。

 .read-more-target img {
  height: 0;
}

.read-more-state:checked ~ .read-more-wrap .read-more-target img {
  height: auto;
}

完整代码：

.read-more-state {
  display: none;
}

.read-more-target {
  opacity: 0;
  max-height: 0;
  font-size: 0;
  transition: .25s ease;
}

.read-more-target img {
  height: 0;
}

.read-more-state:checked ~ .read-more-wrap .read-more-target img {
  height: auto;
}

.read-more-state:checked ~ .read-more-wrap .read-more-target {
  opacity: 1;
  font-size: inherit;
  max-height: 999em;
}

.read-more-state ~ .read-more-trigger:before {
  content: 'Show more';
}

.read-more-state:checked ~ .read-more-trigger:before {
  content: 'Show less';
}

.read-more-trigger {
  cursor: pointer;
  display: inline-block;
  padding: 0 .5em;
  color: #666;
  font-size: .9em;
  line-height: 2;
  border: 1px solid #ddd;
  border-radius: .25em;
}

Answer 1

对于.read-more-target内所有图像的高度，应该能够使用相同的想法。

类似这样的东西：

.read-more-target img {
  height: 0;
}

.read-more-state:checked ~ .read-more-wrap .read-more-target img {
  height: auto;
}

这是对您的小提琴的修改，它是这样进行的：https://jsfiddle.net/xrtxqu94/20/

Answer 2

如果将图像容器设置为opacity:0，则图像仍将占据文档流中的空间。

这是一个解决方案，您可以添加以下规则：

.read-more-state ~ .read-more-wrap img {
     display: none;
}

 .read-more-state:checked ~ .read-more-wrap img {
     display: block;
}

这将确保在关闭读取状态时图像不占用空间

https://jsfiddle.net/xrtxqu94/26/

纯CSS-阅读更多/阅读更少的图像

2 个答案: