通过编写猫咪相册应用学习 HTML - 步骤 49

告诉我们发生了什么:
在此详细描述你的问题。
indoor-outdoor=on的含义
你目前的代码

<html>
  <body>
    <main>
      <h1>CatPhotoApp</h1>
      <section>
        <h2>Cat Photos</h2>
        <!-- TODO: Add link to cat photos -->
        <p>See more <a target="_blank" href="https://freecatphotoapp.com">cat photos</a> in our gallery.</p>
        <a href="https://freecatphotoapp.com"><img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
      <section>
        <h2>Cat Lists</h2>
        <h3>Things cats love:</h3>
        <ul>
          <li>cat nip</li>
          <li>laser pointers</li>
          <li>lasagna</li>
        </ul>
        <figure>
          <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/lasagna.jpg" alt="A slice of lasagna on a plate.">
          <figcaption>Cats <em>love</em> lasagna.</figcaption>  
        </figure>
        <h3>Top 3 things cats hate:</h3>
        <ol>
          <li>flea treatment</li>
          <li>thunder</li>
          <li>other cats</li>
        </ol>
        <figure>
          <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/cats.jpg" alt="Five cats looking around a field.">
          <figcaption>Cats <strong>hate</strong> other cats.</figcaption>  
        </figure>
      </section>
      <section>
        <h2>Cat Form</h2>
        <form action="https://freecatphotoapp.com/submit-cat-photo">

<!-- User Editable Region -->

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

<!-- User Editable Region -->

          <input type="text" name="catphotourl" placeholder="cat photo URL" required>
          <button type="submit">Submit</button>
        </form>
      </section>
    </main>
  </body>
</html>

你的浏览器信息:

用户代理是: Mozilla/5.0 (Linux; Android 13; REP-AN00; HMSCore 6.11.0.302) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.88 HuaweiBrowser/13.0.4.302 Mobile Safari/537.36

挑战: 通过编写猫咪相册应用学习 HTML - 步骤 49

挑战的链接:

indoor-outdoor=on的含义是当你在一个单选按钮中没有设置value这个属性的时候,提交给后台的表单数据就会出现这个信息,这个信息通常是无效的,所以要在单选按钮中加上value这个属性,这样示例中传给后台的表单数据才是indoor-outdoor=value,你可以参考MDN的文档

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