91 lines
3.8 KiB
Markdown
91 lines
3.8 KiB
Markdown
---
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id: bad87fee1348bd9aed908626
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title: Target the Same Element with Multiple jQuery Selectors
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required:
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- link: 'https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.2.0/animate.css'
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challengeType: 6
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videoUrl: ''
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localeTitle: 使用多个jQuery选择器定位相同的元素
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---
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## Description
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<section id="description">现在你知道三种定位元素的方法：按类型： <code>$("button")</code> ，按类： <code>$(".btn")</code>和id <code>$("#target1")</code> 。虽然可以在单个<code>.addClass()</code>调用中添加多个类，但是让我们以<em>三种不同的方式</em>将它们添加到同一个元素中。使用<code>.addClass()</code> ，一次只向同一个元素添加一个类，有三种不同的方式：使用类型<code>button</code>将<code>animated</code>类添加到所有元素。使用类<code>.btn</code>将<code>shake</code>类添加到所有按钮。将<code>btn-primary</code>类添加到id为<code>#target1</code>的按钮。 <strong>注意</strong> <br>您应该只定位一个元素，一次只添加一个类。总而言之，您的三个选择器最终会将三个类<code>shake</code> ， <code>animated</code>和<code>btn-primary</code>到<code>#target1</code> 。 </section>
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## Instructions
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<section id="instructions">
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: 使用<code>$("button")</code>选择器。
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testString: 'assert(code.match(/\$\s*?\(\s*?(?:"|")\s*?button\s*?(?:"|")/gi), "Use the <code>$("button")</code> selector.");'
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- text: 使用<code>$(".btn")</code>选择器。
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testString: 'assert(code.match(/\$\s*?\(\s*?(?:"|")\s*?\.btn\s*?(?:"|")/gi), "Use the <code>$(".btn")</code> selector.");'
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- text: '使用<code>$("#target1")</code>选择器。'
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testString: 'assert(code.match(/\$\s*?\(\s*?(?:"|")\s*?#target1\s*?(?:"|")/gi), "Use the <code>$("#target1")</code> selector.");'
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- text: 只为每个三个选择器添加一个类。
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testString: 'assert(code.match(/addClass/g) && code.match(/addClass\s*?\(\s*?("|")\s*?[\w-]+\s*?\1\s*?\)/g).length > 2, "Only add one class with each of your three selectors.");'
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- text: '你的<code>#target1</code>元素应该有<code>animated</code>类， <code>shake</code>和<code>btn-primary</code> 。'
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testString: 'assert($("#target1").hasClass("animated") && $("#target1").hasClass("shake") && $("#target1").hasClass("btn-primary"), "Your <code>#target1</code> element should have the classes <code>animated</code>‚ <code>shake</code> and <code>btn-primary</code>.");'
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- text: 只使用jQuery将这些类添加到元素中。
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testString: 'assert(!code.match(/class.*animated/g), "Only use jQuery to add these classes to the element.");'
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='html-seed'>
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```html
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<script>
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$(document).ready(function() {
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});
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</script>
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<!-- Only change code above this line. -->
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<div class="container-fluid">
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<h3 class="text-primary text-center">jQuery Playground</h3>
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<div class="row">
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<div class="col-xs-6">
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<h4>#left-well</h4>
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<div class="well" id="left-well">
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<button class="btn btn-default target" id="target1">#target1</button>
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<button class="btn btn-default target" id="target2">#target2</button>
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<button class="btn btn-default target" id="target3">#target3</button>
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</div>
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</div>
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<div class="col-xs-6">
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<h4>#right-well</h4>
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<div class="well" id="right-well">
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<button class="btn btn-default target" id="target4">#target4</button>
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<button class="btn btn-default target" id="target5">#target5</button>
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<button class="btn btn-default target" id="target6">#target6</button>
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</div>
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</div>
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</div>
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</div>
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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