72 lines
1.8 KiB
Markdown
72 lines
1.8 KiB
Markdown
---
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id: bad87fee1348bd9aec908852
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title: 用 jQuery 選擇器給目標元素的添加 class
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challengeType: 0
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forumTopicId: 16815
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dashedName: create-a-class-to-target-with-jquery-selectors
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---
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# --description--
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並不是所有 class 屬性都需要有對應的 CSS 樣式。 有時候我們設置 class 只是爲了更方便地在 jQuery 中選中這些元素。
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爲每一個 `button` 元素添加 `target` class。
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# --hints--
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每一個 `button` 元素都應該設置 `target` class
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```js
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assert($('.target').length > 5);
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```
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# --seed--
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## --seed-contents--
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```html
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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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<div class="well">
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<button class="btn btn-default"></button>
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<button class="btn btn-default"></button>
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<button class="btn btn-default"></button>
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</div>
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</div>
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<div class="col-xs-6">
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<div class="well">
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<button class="btn btn-default"></button>
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<button class="btn btn-default"></button>
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<button class="btn btn-default"></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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# --solutions--
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```html
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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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<div class="well">
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<button class="target btn btn-default"></button>
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<button class="target btn btn-default"></button>
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<button class="target btn btn-default"></button>
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</div>
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</div>
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<div class="col-xs-6">
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<div class="well">
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<button class="target btn btn-default"></button>
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<button class="target btn btn-default"></button>
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<button class="target btn btn-default"></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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