html - 创建一个 CSS 按钮以在单击时显示 x 数量的文本并更改 div 标签的大小

Question

我有一个正在为朋友做的项目。我想显示一些文本，当单击“了解更多”按钮时，将显示文本的其余部分。我已将可见和不可见文本分成单独的

标签并给他们一个类名 - 其中有 3 个。

  <div class="column">
    <h2> BCI </h2>

    <p class="visible_text">
        The Better Cotton
        Initiative (BCI) is a global
        non-profit organisation
        cemented around being
        the largest cotton sustainability
        programme in the
        world.
    </p>

    <p class="non_visible_text">
        The Better Cotton Initiative (BCI) is a global non-profit organisation
        cemented around being the largest cotton sustainability
        programme in the world. Striving towards better global cotton
        production, in terms of bettering the lives of those who produce
        it, better for the environment it grows in and better for the
        sector’s future.
        Thanks to the help of several partners, the BCI provides training
        on more sustainable farming practices to more than two million
        cotton farmers in 21 countries. In the 2017-18 cotton season,
        licensed BCI Farmers produced more than five million metric
        tonnes of ‘Better Cotton’ – that accounts for around 19% of
        global cotton production!
    </p>


    <button class="learnBtn">
        <img src="images/LearnMore.png" alt="Learn More Button">
    </button>
</div>

因此，当单击按钮时，我希望“non_visible_text”类中的文本显示在“visible_text”下方。

有任何想法吗？

标签： htmlcss

Answer 1

如果您寻找一个 css 选项，您需要一个 input(type=checkbox) 在要更新样式的元素之前，无论它是否被选中，并通过 for 属性链接到它的标签，所以它可以站在任何地方：

可能的例子：

#more {/* hide this one */
  position: absolute;
  right: 100vw;
}

.non_visible_text {
  display: none; 
}

label[for="more"] {/* use a label linked to the checkbox, style it like a button if you wish */
  -moz-appearance: button;
  appearance: button;
}

label[for="more"]:after {
  content: ' more.'/* update text */
}

#more:checked~.non_visible_text {
  display: block;/* show hidden tag */
}

#more:checked~label[for="more"]:after {
  content: ' less.'/* update text */
}

<div class="column">
 <h2>HTML Ipsum Presents</h2>

  <p class="visible_text">Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Vestibulum tortor quam, feugiat vitae, ultricies eget, tempor sit amet, ante. Donec eu libero sit amet quam egestas semper. Aenean ultricies mi vitae est. Mauris placerat eleifend leo.</p>
  <input type="checkbox" id="more" />
  <p class="non_visible_text">Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Vestibulum tortor quam, feugiat vitae, ultricies eget, tempor sit amet, ante. Donec eu libero sit amet quam egestas semper. Aenean ultricies mi vitae est. Mauris placerat eleifend leo. Quisque sit amet est et sapien ullamcorper pharetra. Vestibulum erat wisi, condimentum sed, commodo vitae, ornare sit amet, wisi. Aenean fermentum, elit eget tincidunt condimentum, eros ipsum rutrum orci, sagittis tempus lacus enim ac dui. Donec non enim in turpis pulvinar facilisis. Ut felis. Praesent dapibus, neque id cursus faucibus, tortor neque egestas augue, eu vulputate magna eros eu erat. Aliquam erat volutpat. Nam dui mi, tincidunt quis, accumsan porttitor, facilisis luctus, metus</p>


  <label class="learnBtn" for="more">
        see 
    </label>
</div>

这也是按钮文本内容的 javascript 方法：

var myButton    = document.querySelector(".learnBtn");
var text2toggle = document.querySelector(".non_visible_text");

myButton.addEventListener("click", function() {
  if ((myButton.textContent === "see more")) {
    text2toggle.style.display = "block";
    myButton.textContent = "see less";
  } else {
    text2toggle.style.display = "none";
    myButton.textContent = "see more";
  }
});

.non_visible_text {
  display: none
}

<div class="column">
  <h2>HTML Ipsum Presents</h2>

  <p class="visible_text">Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Vestibulum tortor quam, feugiat vitae, ultricies eget, tempor sit amet, ante. Donec eu libero sit amet quam egestas semper. Aenean ultricies mi vitae est.
    Mauris placerat eleifend leo.</p>
  <p class="non_visible_text">Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Vestibulum tortor quam, feugiat vitae, ultricies eget, tempor sit amet, ante. Donec eu libero sit amet quam egestas semper. Aenean ultricies mi vitae est.
    Mauris placerat eleifend leo. Quisque sit amet est et sapien ullamcorper pharetra. Vestibulum erat wisi, condimentum sed, commodo vitae, ornare sit amet, wisi. Aenean fermentum, elit eget tincidunt condimentum, eros ipsum rutrum orci, sagittis tempus
    lacus enim ac dui. Donec non enim in turpis pulvinar facilisis. Ut felis. Praesent dapibus, neque id cursus faucibus, tortor neque egestas augue, eu vulputate magna eros eu erat. Aliquam erat volutpat. Nam dui mi, tincidunt quis, accumsan porttitor,
    facilisis luctus, metus</p>


  <button type="text" class="learnBtn">see more</button>
</div>