3.2 KiB

Raw Blame History

id	title	challengeType	videoUrl	forumTopicId	dashedName
bad87fee1348bd9aedd08835	给单选按钮和复选框添加默认选中项	0	https://scrimba.com/p/pVMPUv/cWk3Qh6	301094	check-radio-buttons-and-checkboxes-by-default

--description--

用 checked 属性把第一个复选框和单选按钮都设置为默认选中。

在一个 input 元素里面添加 checked 这个词，即可实现。例如:

<input type="radio" name="test-name" checked>

--instructions--

把第一个单选按钮和第一个复选框都设置为默认选中。

--hints--

表单的第一个多选按钮应被默认选中。

assert($('input[type="radio"]').prop('checked'));

表单的第一个复选框应被默认选中。

assert($('input[type="checkbox"]').prop('checked'));

--seed--

--seed-contents--

<h2>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>

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

--solutions--

<h2>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>

  <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>
  <form action="https://freecatphotoapp.com/submit-cat-photo">
    <label for="indoor"><input id="indoor" type="radio" name="indoor-outdoor" value="indoor" checked> Indoor</label>
    <label for="outdoor"><input id="outdoor" type="radio" name="indoor-outdoor" value="outdoor"> Outdoor</label><br>
    <label for="loving"><input id="loving" type="checkbox" name="personality" value="loving" checked> Loving</label>
    <label for="lazy"><input id="lazy" type="checkbox" name="personality" value="lazy"> Lazy</label>
    <label for="energetic"><input id="energetic" type="checkbox" name="personality" value="energetic"> 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--

--instructions--

--hints--

--seed--

--seed-contents--

--solutions--

3.2 KiB

Raw Blame History