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我正在寻找一种在我的响应式网站上创建滑出“显示更多”功能的方法，该功能会在段落的两行之后切断。

我之前通过静态网站实现了这一点，方法是对容器应用设置的高度并使用overflow: hidden，然后为容器的高度设置动画。

但是响应式，容器以不同的浏览器宽度挤压文本，因此文本可能会占用更多/更少的空间。每次下推，段落上方也可能有不同的内容。所以设置height可能不会完全覆盖两条线。

如果您需要演示，请查看这个 jsFiddle：http: //jsfiddle.net/XVAzU/ 。

所以我需要在段落的两行之后切断，无论容器的宽度是多少，或者该段落之前或之后是什么。

感谢您的关注！

4

3 回答 3

32

从你的小提琴开始，将内容包装成<div>一个默认类content，用于选择和一个名为的类，单击链接 时hideContent将与之交换。showContentshow more/show less

我还删除了<p>文本。文本现在在 content-div 中，我们现在也可以应用正确的高度和行高设置。

HTML：

<div class="text-container">
    <h1>Title goes here</h1>
    <h2>Subtitle</h2>
    <div class="content hideContent">
        Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua.
        <p>Some more text</p>
        <ul>
            <li>Some more text</li>
            <li>Some more text</li>
            <li>Some more text</li>
        </ul>
    </div>
    <div class="show-more">
        <a href="#">Show more</a>
    </div>
</div>​

CSS：

.hideContent {
    overflow: hidden;
    line-height: 1em;
    height: 2em;
}

.showContent {
    line-height: 1em;
    height: auto;
}

我假设设置line-height将确保它在所有浏览器中都是相同的。不过，我不是 100% 确定这一点。

我在“显示更多”链接上附加了一个点击事件，该链接使用 jQueryUI switchClass()切换 div 上的类：

$(".show-more a").on("click", function() {
    var $this = $(this); 
    var $content = $this.parent().prev("div.content");
    var linkText = $this.text().toUpperCase();    

    if(linkText === "SHOW MORE"){
        linkText = "Show less";
        $content.switchClass("hideContent", "showContent", 400);
    } else {
        linkText = "Show more";
        $content.switchClass("showContent", "hideContent", 400);
    };

    $this.text(linkText);
});​

JsFiddle Demo - 显示更多/显示更少并应用行高和动画

$(".show-more a").on("click", function() {
  var $this = $(this);
  var $content = $this.parent().prev("div.content");
  var linkText = $this.text().toUpperCase();

  if (linkText === "SHOW MORE") {
    linkText = "Show less";
    $content.switchClass("hideContent", "showContent", 400);
  } else {
    linkText = "Show more";
    $content.switchClass("showContent", "hideContent", 400);
  };

  $this.text(linkText);
});
div.text-container {
  margin: 0 auto;
  width: 75%;
}

.hideContent {
  overflow: hidden;
  line-height: 1em;
  height: 2em;
}

.showContent {
  line-height: 1em;
  height: auto;
}

.showContent {
  height: auto;
}

h1 {
  font-size: 24px;
}

p {
  padding: 10px 0;
}

.show-more {
  padding: 10px 0;
  text-align: center;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.0/jquery.min.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.min.js"></script>

<div class="text-container">
  <h1>Title goes here</h1>
  <h2>Subtitle</h2>
  <div class="content hideContent">
    Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata
    sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua.
    <p>Some more text</p>
    <ul>
      <li>Some more text</li>
      <li>Some more text</li>
      <li>Some more text</li>
    </ul>
  </div>
  <div class="show-more">
    <a href="#">Show more</a>
  </div>
</div>

上面的代码只是一个例子，但应该让你开始朝着正确的方向前进。

于 2012-09-06T20:42:17.297 回答
9

如果您正在寻找仅使用 css 的解决方案，请查看以下内容：

HTML

 <div class="show-hide-text">
  <a  id="show-more" class="show-less" href="#show-less">Show less</a>
  <a  id="show-less" class="show-more" href="#show-more">Show more</a>
  <p>
    Lorem Ipsum is simply dummy text of  the printing and typesetting industry...
  </p>
</div>

// CSS

.show-hide-text {
  display: flex;
  flex-wrap: wrap;
}

.show-hide-text a {
  order: 2;
}

.show-hide-text p {
  position: relative;
  overflow: hidden;
  max-height: 60px; // The Height of 3 rows
}

.show-hide-text p {
  display: -webkit-box;
  -webkit-line-clamp: 3; // 3 Rows of text
  -webkit-box-orient: vertical;
}

.show-less {
  display: none;
}

.show-less:target {
  display: block;
}

.show-less:target ~ p {
  display: block;
  max-height: 100%;
}

.show-less:target + a {
  display: none;
}

一个例子：https ://codepen.io/srekoble/pen/WGBzZa?editors=1100

于 2017-03-20T12:22:49.410 回答
1

我的解决问题的建议

$("#slider_desc_toogler").on( "click", function() { 
  $('#slider_desc_toogler > i').toggleClass('fa-arrow-circle-down')
  $('#slider_desc_toogler > i').toggleClass('fa-arrow-circle-up')
  if ($("#slider_desc_toogler > i").hasClass( "fa-arrow-circle-down" )) {
    $(".slider_desc").css("max-height","38px");
  } else $(".slider_desc").css("max-height","500px");
});
.slider_desc {
  margin: 16px;
  margin-top: 0px;
  color: #333333;
  font-family: Arial;
  font-size: 14px;
  line-height: 18px;
  text-align: justify;
  overflow: hidden;
  transition: all 0.5s ease 0s;
  max-height: 38px;
}

#slider_desc_toogler{
  border-top: silver 1px dotted;
  margin-bottom: 30px;
  margin-top: 20px;
  width: 70%;
  margin-left: auto;
  margin-right: auto;
}

#slider_desc_toogler i {
      position: absolute;
      text-align: center;
      color: silver;
      font-size: 25px;
      font-family: fontawesome;
      left: calc(50% - 10px);
      margin-top: -13px;
      background: #fff;
  }
<link href="https://use.fontawesome.com/releases/v5.3.1/css/all.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<div class="slider_desc">
            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.


            </div>
            <div id="slider_desc_toogler"><i class="fas fa-arrow-circle-down"></i></div>

于 2020-07-10T13:47:09.403 回答