87 lines
3.1 KiB
Markdown
87 lines
3.1 KiB
Markdown
---
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id: bad87fee1348bd9aeda08826
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title: Target Elements by id Using jQuery
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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: id的目标元素使用jQuery
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---
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## Description
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<section id="description">您还可以通过其id属性来定位元素。首先使用<code>$("#target3")</code>选择器将您的<code>button</code>元素与id <code>target3</code> <code>$("#target3")</code> 。请注意，就像CSS声明一样，您在id的名称前键入<code>#</code> 。然后使用jQuery的<code>.addClass()</code>函数添加<code>animated</code>类和<code>fadeOut</code> 。以下是如何使用id <code>target6</code>淡出的<code>button</code>元素： <code>$("#target6").addClass("animated fadeOut")</code> 。 </section>
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## Instructions
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<section id="instructions">
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: 选择<code>id</code>为<code>target3</code>的<code>button</code>元素，并使用jQuery <code>addClass()</code>函数为它提供<code>animated</code>类。
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testString: 'assert($("#target3").hasClass("animated"), "Select the <code>button</code> element with the <code>id</code> of <code>target3</code> and use the jQuery <code>addClass()</code> function to give it the class of <code>animated</code>.");'
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- text: 使用id <code>target3</code>定位元素，并使用jQuery <code>addClass()</code>函数为其提供类<code>fadeOut</code> 。
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testString: 'assert(($("#target3").hasClass("fadeOut") || $("#target3").hasClass("fadeout")) && code.match(/\$\(\s*.#target3.\s*\)/g), "Target the element with the id <code>target3</code> and use the jQuery <code>addClass()</code> function to give it the class <code>fadeOut</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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$(document).ready(function() {
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$("button").addClass("animated bounce");
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$(".well").addClass("animated shake");
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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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