88 lines
3.0 KiB
Markdown
88 lines
3.0 KiB
Markdown
---
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id: bad87fee1348bd9aed208826
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title: Target the Children of an Element Using jQuery
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challengeType: 6
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videoUrl: ''
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localeTitle: 使用jQuery定位元素的子元素
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---
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## Description
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<section id="description">当HTML元素放在另一个下面时，它们被称为该元素的<code>children</code>元素。例如，在与文本“＃Target1时”，“＃TARGET2”，和“＃target3”这一挑战的按钮元件都是<code>children</code>的的<code><div class="well" id="left-well"></code>元素。 jQuery有一个名为<code>children()</code>的函数，允许您访问您选择的元素的子元素。下面是一个示例，说明如何使用<code>children()</code>函数为<code>left-well</code>元素的子项设置<code>blue</code> ： <code>$("#left-well").children().css("color", "blue")</code> </section>
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## Instructions
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<section id="instructions">给你的<code>right-well</code>元素的所有孩子颜色为橙色。 </section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: '<code>#right-well</code>所有孩子都应该有橙色文字。'
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testString: 'assert($("#right-well").children().css("color") === "rgb(255, 165, 0)", "All children of <code>#right-well</code> should have orange text.");'
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- text: 您应该使用<code>children()</code>函数来修改这些元素。
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testString: 'assert(code.match(/\.children\(\)\.css/g), "You should use the <code>children()</code> function to modify these elements.");'
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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(/<div class="well" id="right-well">/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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$(document).ready(function() {
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$("#target1").css("color", "red");
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$("#target1").prop("disabled", true);
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$("#target4").remove();
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$("#target2").appendTo("#right-well");
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$("#target5").clone().appendTo("#left-well");
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$("#target1").parent().css("background-color", "red");
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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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