ee1e8abd87
* 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>
92 lines
2.3 KiB
Markdown
92 lines
2.3 KiB
Markdown
---
|
|
id: bad87fee1348bd9aec908853
|
|
title: 给 Bootstrap 元素添加id属性
|
|
challengeType: 0
|
|
forumTopicId: 16639
|
|
dashedName: add-id-attributes-to-bootstrap-elements
|
|
---
|
|
|
|
# --description--
|
|
|
|
回忆一下，除了可以给元素添加 class 属性，我们还可以给元素设置 `id` 属性。
|
|
|
|
每个指定元素的 id 都是唯一的，并且在每个页面中都只能使用一次。
|
|
|
|
让我们为每个 class 为 `well` 的 `div` 元素添加一个唯一的 id。
|
|
|
|
记住，你可以这样给一个元素设置 ID。
|
|
|
|
`<div class="well" id="center-well">`
|
|
|
|
把左边 well 的 ID 设置为 `left-well`。右边的 well 的 ID 设置为 `right-well`。
|
|
|
|
# --hints--
|
|
|
|
把左边的 `well` 的 ID 设置为 `left-well`。
|
|
|
|
```js
|
|
assert(
|
|
$('.col-xs-6').children('#left-well') &&
|
|
$('.col-xs-6').children('#left-well').length > 0
|
|
);
|
|
```
|
|
|
|
把右边的 `well` 的 ID 设置为 `right-well`。
|
|
|
|
```js
|
|
assert(
|
|
$('.col-xs-6').children('#right-well') &&
|
|
$('.col-xs-6').children('#right-well').length > 0
|
|
);
|
|
```
|
|
|
|
# --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 target"></button>
|
|
<button class="btn btn-default target"></button>
|
|
<button class="btn btn-default target"></button>
|
|
</div>
|
|
</div>
|
|
<div class="col-xs-6">
|
|
<div class="well">
|
|
<button class="btn btn-default target"></button>
|
|
<button class="btn btn-default target"></button>
|
|
<button class="btn btn-default target"></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" id="left-well">
|
|
<button class="btn btn-default target"></button>
|
|
<button class="btn btn-default target"></button>
|
|
<button class="btn btn-default target"></button>
|
|
</div>
|
|
</div>
|
|
<div class="col-xs-6">
|
|
<div class="well" id="right-well">
|
|
<button class="btn btn-default target"></button>
|
|
<button class="btn btn-default target"></button>
|
|
<button class="btn btn-default target"></button>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
```
|