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freeCodeCamp/curriculum/challenges/english/03-front-end-libraries/jquery/change-the-css-of-an-element-using-jquery.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

117 lines
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Markdown

---
id: bad87fee1348bd9aed908826
title: Change the CSS of an Element Using jQuery
challengeType: 6
forumTopicId: 16776
required:
- link: 'https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.2.0/animate.css'
dashedName: change-the-css-of-an-element-using-jquery
---
# --description--
We can also change the CSS of an HTML element directly with jQuery.
jQuery has a function called `.css()` that allows you to change the CSS of an element.
Here's how we would change its color to blue:
`$("#target1").css("color", "blue");`
This is slightly different from a normal CSS declaration, because the CSS property and its value are in quotes, and separated with a comma instead of a colon.
Delete your jQuery selectors, leaving an empty `document ready function`.
Select `target1` and change its color to red.
# --hints--
Your `target1` element should have red text.
```js
assert($('#target1').css('color') === 'rgb(255, 0, 0)');
```
You should only use jQuery to add these classes to the element.
```js
assert(!code.match(/class.*animated/g));
```
# --seed--
## --seed-contents--
```html
<script>
$(document).ready(function() {
$("button").addClass("animated bounce");
$(".well").addClass("animated shake");
$("#target3").addClass("animated fadeOut");
$("button").removeClass("btn-default");
});
</script>
<!-- Only change code above this line -->
<div class="container-fluid">
<h3 class="text-primary text-center">jQuery Playground</h3>
<div class="row">
<div class="col-xs-6">
<h4>#left-well</h4>
<div class="well" id="left-well">
<button class="btn btn-default target" id="target1">#target1</button>
<button class="btn btn-default target" id="target2">#target2</button>
<button class="btn btn-default target" id="target3">#target3</button>
</div>
</div>
<div class="col-xs-6">
<h4>#right-well</h4>
<div class="well" id="right-well">
<button class="btn btn-default target" id="target4">#target4</button>
<button class="btn btn-default target" id="target5">#target5</button>
<button class="btn btn-default target" id="target6">#target6</button>
</div>
</div>
</div>
</div>
```
# --solutions--
```html
<script>
$(document).ready(function() {
$("button").addClass("animated bounce");
$(".well").addClass("animated shake");
$("#target3").addClass("animated fadeOut");
$("button").removeClass("btn-default");
$("#target1").css("color", "red");
});
</script>
<!-- Only change code above this line -->
<div class="container-fluid">
<h3 class="text-primary text-center">jQuery Playground</h3>
<div class="row">
<div class="col-xs-6">
<h4>#left-well</h4>
<div class="well" id="left-well">
<button class="btn btn-default target" id="target1">#target1</button>
<button class="btn btn-default target" id="target2">#target2</button>
<button class="btn btn-default target" id="target3">#target3</button>
</div>
</div>
<div class="col-xs-6">
<h4>#right-well</h4>
<div class="well" id="right-well">
<button class="btn btn-default target" id="target4">#target4</button>
<button class="btn btn-default target" id="target5">#target5</button>
<button class="btn btn-default target" id="target6">#target6</button>
</div>
</div>
</div>
</div>
```