87 lines
2.6 KiB
Markdown
87 lines
2.6 KiB
Markdown
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---
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id: bad87fee1348bd9aed908826
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title: Change the CSS of an Element 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: 使用jQuery更改元素的CSS
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---
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## Description
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<section id="description">我们也可以使用jQuery直接更改HTML元素的CSS。 jQuery有一个名为<code>.css()</code>的函数，允许您更改元素的CSS。以下是我们将其颜色更改为蓝色的方法： <code>$("#target1").css("color", "blue");</code>这与普通的CSS声明略有不同，因为CSS属性及其值在引号中，并用逗号而不是冒号分隔。删除jQuery选择器，留下一个空的<code>document ready function</code> 。选择<code>target1</code>并将其颜色更改为红色。 </section>
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## Instructions
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<section id="instructions">
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: 您的<code>target1</code>元素应该有红色文本。
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testString: 'assert($("#target1").css("color") === "rgb(255, 0, 0)", "Your <code>target1</code> element should have red text.");'
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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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$(".well").addClass("animated shake");
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$("#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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</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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