freeCodeCamp/curriculum/challenges/chinese/01-responsive-web-design/basic-html-and-html5/use-the-value-attribute-with-radio-buttons-and-checkboxes.md
Oliver Eyton-Williams ee1e8abd87
feat(curriculum): restore seed + solution to Chinese (#40683)
* feat(tools): add seed/solution restore script

* chore(curriculum): remove empty sections' markers

* chore(curriculum): add seed + solution to Chinese

* chore: remove old formatter

* fix: update getChallenges

parse translated challenges separately, without reference to the source

* chore(curriculum): add dashedName to English

* chore(curriculum): add dashedName to Chinese

* refactor: remove unused challenge property 'name'

* fix: relax dashedName requirement

* fix: stray tag

Remove stray `pre` tag from challenge file.

Signed-off-by: nhcarrigan <nhcarrigan@gmail.com>

Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
2021-01-12 19:31:00 -07:00

4.6 KiB

id, title, challengeType, forumTopicId, dashedName
id title challengeType forumTopicId dashedName
5c6c06847491271903d37cfd 使用单选框和复选框的 value 属性 0 301099 use-the-value-attribute-with-radio-buttons-and-checkboxes

--description--

提交表单时,所选项的值会发送给服务端。radiocheckboxvalue 属性值决定了发送到服务端的实际内容。

例如:

<label for="indoor"> 
  <input id="indoor" value="indoor" type="radio" name="indoor-outdoor">Indoor 
</label>
<label for="outdoor"> 
  <input id="outdoor" value="outdoor" type="radio" name="indoor-outdoor">Outdoor 
</label>

这里有两个 radio 单选框。当用户提交表单时,如果 indoor 选项被选中,表单数据会包含:indoor-outdoor=indoor。也就是所选项的 namevalue 属性值。

如果没有指明 value 属性值,则会使用默认值做为表单数据提交,也就是 on。在这种情况下,如果用户选中 "indoor" 选项然后提交表单,表单数据则会包含 indoor-outdoor=on。这样的表单数据看起来不够直观,因此最好将 value 属性值设置为一些有意义的内容。

--instructions--

给每一个 radiocheckbox 输入框添加 value 属性,属性值为 input 对应 label 中文本的小写形式。如 Outdoor 的 value 应设置为 "outdoor",即 value="outdoor"

--hints--

应有一个单选按钮的 value 属性值为 indoor

assert(
  $('label:contains("Indoor") > input[type="radio"]').filter("[value='indoor']")
    .length > 0
);

应有一个单选按钮的 value 属性值为 outdoor

assert(
  $('label:contains("Outdoor") > input[type="radio"]').filter(
    "[value='outdoor']"
  ).length > 0
);

应有一个复选框的 value 属性值为 loving

assert(
  $('label:contains("Loving") > input[type="checkbox"]').filter(
    "[value='loving']"
  ).length > 0
);

应有一个复选框的 value 属性值为 lazy

assert(
  $('label:contains("Lazy") > input[type="checkbox"]').filter("[value='lazy']")
    .length > 0
);

应有一个复选框的 value 属性值为 energetic

assert(
  $('label:contains("Energetic") > input[type="checkbox"]').filter(
    "[value='energetic']"
  ).length > 0
);

--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"> Indoor</label>
    <label for="outdoor"><input id="outdoor" type="radio" name="indoor-outdoor"> Outdoor</label><br>
    <label for="loving"><input id="loving" type="checkbox" name="personality"> Loving</label>
    <label for="lazy"><input id="lazy" type="checkbox" name="personality"> Lazy</label>
    <label for="energetic"><input id="energetic" type="checkbox" name="personality"> 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"> 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>