Files
freeCodeCamp/curriculum/challenges/chinese/03-front-end-libraries/bootstrap/create-a-class-to-target-with-jquery-selectors.md
Oliver Eyton-Williams ee1e8abd87 feat(curriculum): restore seed + solution to Chinese (#40683)
* feat(tools): add seed/solution restore script

* chore(curriculum): remove empty sections' markers

* chore(curriculum): add seed + solution to Chinese

* chore: remove old formatter

* fix: update getChallenges

parse translated challenges separately, without reference to the source

* chore(curriculum): add dashedName to English

* chore(curriculum): add dashedName to Chinese

* refactor: remove unused challenge property 'name'

* fix: relax dashedName requirement

* fix: stray tag

Remove stray `pre` tag from challenge file.

Signed-off-by: nhcarrigan <nhcarrigan@gmail.com>

Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
2021-01-12 19:31:00 -07:00

72 lines
1.8 KiB
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---
id: bad87fee1348bd9aec908852
title: 分别给每个目标元素的 class 属性添加一个 target 值
challengeType: 0
forumTopicId: 16815
dashedName: create-a-class-to-target-with-jquery-selectors
---
# --description--
并不是所有 class 属性都需要有对应的 CSS 样式。有时候我们设置 class 只是为了更方便地在 jQuery 中选中这些元素。
为每一个 `button` 元素添加 `target` class。
# --hints--
给你的每一个 `button` 元素设置 `target` class。
```js
assert($('.target').length > 5);
```
# --seed--
## --seed-contents--
```html
<div class="container-fluid">
<h3 class="text-primary text-center">jQuery Playground</h3>
<div class="row">
<div class="col-xs-6">
<div class="well">
<button class="btn btn-default"></button>
<button class="btn btn-default"></button>
<button class="btn btn-default"></button>
</div>
</div>
<div class="col-xs-6">
<div class="well">
<button class="btn btn-default"></button>
<button class="btn btn-default"></button>
<button class="btn btn-default"></button>
</div>
</div>
</div>
</div>
```
# --solutions--
```html
<div class="container-fluid">
<h3 class="text-primary text-center">jQuery Playground</h3>
<div class="row">
<div class="col-xs-6">
<div class="well">
<button class="target btn btn-default"></button>
<button class="target btn btn-default"></button>
<button class="target btn btn-default"></button>
</div>
</div>
<div class="col-xs-6">
<div class="well">
<button class="target btn btn-default"></button>
<button class="target btn btn-default"></button>
<button class="target btn btn-default"></button>
</div>
</div>
</div>
</div>
```