3b7b64feb3
Co-authored-by: Zhicheng Chen <chenzhicheng@dayuwuxian.com> Co-authored-by: S1ngS1ng <liuxing0514@gmail.com>
125 lines
3.5 KiB
Markdown
125 lines
3.5 KiB
Markdown
---
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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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forumTopicId: 18264
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localeTitle: 使用 jQuery 从元素中移除 class
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---
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## Description
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<section id='description'>
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和用 jQuery 的<code>addClass()</code>方法给标签添加类一样，也可以利用 jQuery 的<code>removeClass()</code>方法移除他们。
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下面的代码效果是为特定的按钮执行上面的操作：
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<code>$("#target2").removeClass("btn-default");</code>
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请把所有<code>button</code>标签的<code>btn-default</code>类移除。
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</section>
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## Instructions
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<section id='instructions'>
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: 移除所有的<code>button</code>标签的<code>btn-default</code>属性。
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testString: assert($(".btn-default").length === 0);
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- text: 仅用 jQuery 从标签中移除类。
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testString: assert(code.match(/btn btn-default/g));
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- text: 仅移除<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));
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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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<!-- 请修改本行以上的代码 -->
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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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```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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$("button").removeClass("btn-default");
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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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</section>
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