88 lines
2.6 KiB
Markdown
88 lines
2.6 KiB
Markdown
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---
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id: bad87fee1348bd9aed918626
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title: Remove Classes from an Element with 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: 使用jQuery从元素中删除类
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---
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## Description
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<section id="description">以同样的方式，你可以添加类与jQuery的元素<code>addClass()</code>函数，你可以用jQuery的删除它们<code>removeClass()</code>函数。以下是为特定按钮执行此操作的方法： <code>$("#target2").removeClass("btn-default");</code>让我们从所有<code>button</code>元素中删除<code>btn-default</code>类。 </section>
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## Instructions
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<section id="instructions">
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: 从所有<code>button</code>元素中删除<code>btn-default</code>类。
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testString: 'assert($(".btn-default").length === 0, "Remove the <code>btn-default</code> class from all of your <code>button</code> elements.");'
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- text: 仅使用jQuery从元素中删除此类。
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testString: 'assert(code.match(/btn btn-default/g), "Only use jQuery to remove this class from the element.");'
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- text: 只删除<code>btn-default</code>类。
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testString: 'assert(code.match(/\.[\v\s]*removeClass[\s\v]*\([\s\v]*("|")\s*btn-default\s*("|")[\s\v]*\)/gm), "Only remove the <code>btn-default</code> class.");'
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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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$(".well").addClass("animated shake");
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$("#target3").addClass("animated fadeOut");
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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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