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---
id: bad87fee1348bd9aed918626
title: Remove Classes from an Element with jQuery
required:
- link: 'https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.2.0/animate.css'
challengeType: 6
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forumTopicId: 18264
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localeTitle: Удаление классов из элемента с помощью jQuery
---
## Description
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< section id = 'description' >
Таким же образом вы можете добавлять классы к элементу с < code > addClass()< / code > jQuery, вы можете удалить их с < code > removeClass()< / code > функции < code > removeClass()< / code > jQuery. Вот как вы это сделаете для конкретной кнопки: < code > $(" #target2" ).removeClass(" btn-default" );< / code > Давайте удалим < code > btn-default< / code > из всех элементов < code > button< / code > .
< / section >
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## Instructions
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< section id = 'instructions' >
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< / section >
## Tests
< section id = 'tests' >
```yml
tests:
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- text: Remove the < code > btn-default</ code > class from all of your < code > button</ code > elements.
testString: assert($(".btn-default").length === 0);
- text: Only use jQuery to remove this class from the element.
testString: assert(code.match(/btn btn-default/g));
- text: Only remove the < code > btn-default</ code > class.
testString: assert(code.match(/\.[\v\s]*removeClass[\s\v]*\([\s\v]*('|")\s*btn-default\s*('|")[\s\v]*\)/gm));
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```
< / section >
## Challenge Seed
< section id = 'challengeSeed' >
< div id = 'html-seed' >
```html
< script >
$(document).ready(function() {
$("button").addClass("animated bounce");
$(".well").addClass("animated shake");
$("#target3").addClass("animated fadeOut");
});
< / 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 >
```
< / div >
< / section >
## Solution
< section id = 'solution' >
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```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 >
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```
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< / section >