freeCodeCamp/use-attribute-selectors-to-style-elements.chinese.md at 98977942ff2c3ec5ff34c02f23182805ddc0ee8b

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Randell Dawson 98977942ff fix(learn): updated catphotoapp links (Chinese) (#39252 )

2020-07-15 15:25:06 +05:30

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id, title, challengeType, videoUrl, forumTopicId, localeTitle

id	title	challengeType	videoUrl	forumTopicId	localeTitle
58c383d33e2e3259241f3076	Use Attribute Selectors to Style Elements	0	https://scrimba.com/c/cnpymfJ	301092	使用属性选择器来设置元素的样式

Description

你已经通过设置元素的id和class，来显示你想要的样式，而它们也被分别叫做 ID 选择器和 Class 选择器。另外，也还有其他的 CSS 选择器，可以让我们给特定的元素设置样式。让我们再次通过猫咪图片项目来练习 CSS 选择器。在这个挑战里，你会使用[attr=value]属性选择器修改复选框的样式。这个选择器使用特定的属性值来匹配和设置元素样式。例如，下面的代码会改变所有type为radio的元素的外边距。

[type='radio'] {
  margin: 20px 0px 20px 0px;
}

Instructions

使用type属性选择器，尝试改变复选框的上外边距为 10px，下外边距为 15px。

Tests

tests:
  - text: '使用<code>type</code>属性选择器来匹配复选框。'
    testString: assert(code.match(/<style>[\s\S]*?\[type=("|')checkbox\1\]\s*?{[\s\S]*?}[\s\S]*?<\/style>/gi));
  - text: '复选框的上外边距应为 10px。'
    testString: assert((function() {var count=0; $("[type='checkbox']").each(function() { if($(this).css('marginTop') === '10px') {count++;}});return (count===3)}()));
  - text: '复选框的下外边距应为 15px。'
    testString: assert((function() {var count=0; $("[type='checkbox']").each(function() { if($(this).css('marginBottom') === '15px') {count++;}});return (count===3)}()));

Challenge Seed

<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
<style>
  .red-text {
    color: red;
  }

  h2 {
    font-family: Lobster, monospace;
  }

  p {
    font-size: 16px;
    font-family: monospace;
  }

  .thick-green-border {
    border-color: green;
    border-width: 10px;
    border-style: solid;
    border-radius: 50%;
  }

  .smaller-image {
    width: 100px;
  }

  .silver-background {
    background-color: silver;
  }
</style>

<h2 class="red-text">CatPhotoApp</h2>
<main>
  <p class="red-text">点击查看更多<a href="#">猫图</a>.</p>
  
  <a href="#"><img src="https://bit.ly/fcc-relaxing-cat" alt="一只仰卧着的萌猫" class="smaller-image thick-green-border"></a>
  
  <div class="silver-background">
    <p>猫咪最喜欢的三件东西：</p>
    <ul>
      <li>猫薄荷</li>
      <li>激光笔</li>
      <li>千层饼</li>
    </ul>
    <p>猫咪最讨厌的三件东西：</p>
    <ol>
      <li>跳蚤</li>
      <li>打雷</li>
      <li>同类</li>
    </ol>
  </div>
  
  <form action="https://freecatphotoapp.com/submit-cat-photo" id="cat-photo-form">
    <label><input type="radio" name="indoor-outdoor">室内</label>
    <label><input type="radio" name="indoor-outdoor">室外</label><br>
    <label><input type="checkbox" name="personality">忠诚</label>
    <label><input type="checkbox" name="personality">懒惰</label>
    <label><input type="checkbox" name="personality">积极</label><br>
    <input type="text" placeholder="猫咪图片地址" required>
    <button type="submit">提交</button>
  </form>
</main>

Solution

// solution required

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