3.2 KiB

Raw Blame History

id	title	challengeType	videoUrl	forumTopicId	dashedName
bad87fee1348bd9aefe08806	使用 class 选择器设置多个元素的样式	0	https://scrimba.com/c/cRkVbsQ	18311	style-multiple-elements-with-a-css-class

--description--

通过 CSS class 选择器，多个 HTML 元素可以使用相同的 CSS 样式规则。你可以将 red-text class 添加到第一个 p 元素上。

--hints--

h2 元素应该是红色的。

assert($('h2').css('color') === 'rgb(255, 0, 0)');

h2 元素应含有 red-text class。

assert($('h2').hasClass('red-text'));

第一个 p 元素应为红色。

assert($('p:eq(0)').css('color') === 'rgb(255, 0, 0)');

第二和第三个 p 元素不应为红色。

assert(
  !($('p:eq(1)').css('color') === 'rgb(255, 0, 0)') &&
    !($('p:eq(2)').css('color') === 'rgb(255, 0, 0)')
);

第一个 p 元素应该包含 red-text class。

assert($('p:eq(0)').hasClass('red-text'));

--seed--

--seed-contents--

<style>
  .red-text {
    color: red;
  }
</style>

<h2 class="red-text">CatPhotoApp</h2>
<main>
  <p>Click here to view more <a href="#">cat photos</a>.</p>

  <a href="#"><img src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>

  <div>
    <p>Things cats love:</p>
    <ul>
      <li>cat nip</li>
      <li>laser pointers</li>
      <li>lasagna</li>
    </ul>
    <p>Top 3 things cats hate:</p>
    <ol>
      <li>flea treatment</li>
      <li>thunder</li>
      <li>other cats</li>
    </ol>
  </div>

  <form action="https://freecatphotoapp.com/submit-cat-photo">
    <label><input type="radio" name="indoor-outdoor" checked> Indoor</label>
    <label><input type="radio" name="indoor-outdoor"> Outdoor</label><br>
    <label><input type="checkbox" name="personality" checked> Loving</label>
    <label><input type="checkbox" name="personality"> Lazy</label>
    <label><input type="checkbox" name="personality"> Energetic</label><br>
    <input type="text" placeholder="cat photo URL" required>
    <button type="submit">Submit</button>
  </form>
</main>

--solutions--

<style>
  .red-text {
    color: red;
  }
</style>

<h2 class="red-text">CatPhotoApp</h2>
<main>
  <p class="red-text">Click here to view more <a href="#">cat photos</a>.</p>

  <a href="#"><img src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>

  <div>
    <p>Things cats love:</p>
    <ul>
      <li>cat nip</li>
      <li>laser pointers</li>
      <li>lasagna</li>
    </ul>
    <p>Top 3 things cats hate:</p>
    <ol>
      <li>flea treatment</li>
      <li>thunder</li>
      <li>other cats</li>
    </ol>
  </div>

  <form action="https://freecatphotoapp.com/submit-cat-photo">
    <label><input type="radio" name="indoor-outdoor" checked> Indoor</label>
    <label><input type="radio" name="indoor-outdoor"> Outdoor</label><br>
    <label><input type="checkbox" name="personality" checked> Loving</label>
    <label><input type="checkbox" name="personality"> Lazy</label>
    <label><input type="checkbox" name="personality"> Energetic</label><br>
    <input type="text" placeholder="cat photo URL" required>
    <button type="submit">Submit</button>
  </form>
</main>

3.2 KiB Raw Blame History

--description--

--hints--

--seed--

--seed-contents--

--solutions--

3.2 KiB

Raw Blame History