freeCodeCamp/curriculum/challenges/chinese/01-responsive-web-design/basic-html-and-html5/check-radio-buttons-and-checkboxes-by-default.chinese.md

id	title	challengeType	videoUrl	localeTitle
bad87fee1348bd9aedd08835	Check Radio Buttons and Checkboxes by Default	0		默认情况下检查单选按钮和复选框

Description

您可以使用checked属性设置默认情况下要选中的复选框或单选按钮。为此，只需将“checked”一词添加到input元素的内部即可。例如： <input type="radio" name="test-name" checked>

Instructions

默认情况下，设置第一个radio buttons和第一个checkboxes 。

Tests

tests:
  - text: 默认情况下，应检查表单上的第一个单选按钮。
    testString: 'assert($("input[type="radio"]").prop("checked"), "Your first radio button on your form should be checked by default.");'
  - text: 默认情况下，应检查表单上的第一个复选框。
    testString: 'assert($("input[type="checkbox"]").prop("checked"), "Your first checkbox on your form should be checked by default.");'

Challenge Seed

<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="/submit-cat-photo">
    <label><input type="radio" name="indoor-outdoor"> Indoor</label>
    <label><input type="radio" name="indoor-outdoor"> Outdoor</label><br>
    <label><input type="checkbox" name="personality"> 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>

Solution

// solution required