* fix(curriculum) replace single-line blocks with multi-line blocks for Front End Libraries #41523 Second attempt * Update curriculum/challenges/english/03-front-end-libraries/react/use--for-a-more-concise-conditional.md Co-authored-by: Nicholas Carrigan (he/him) <nhcarrigan@gmail.com> Co-authored-by: Nicholas Carrigan (he/him) <nhcarrigan@gmail.com>
		
			
				
	
	
	
		
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id, title, challengeType, forumTopicId, required, dashedName
| id | title | challengeType | forumTopicId | required | dashedName | |||
|---|---|---|---|---|---|---|---|---|
| bad87fee1348bd9aed918626 | Remove Classes from an Element with jQuery | 6 | 18264 | 
 | remove-classes-from-an-element-with-jquery | 
--description--
In the same way you can add classes to an element with jQuery's addClass() function, you can remove them with jQuery's removeClass() function.
Here's how you would do this for a specific button:
$("#target2").removeClass("btn-default");
Let's remove the btn-default class from all of our button elements.
--hints--
The btn-default class should be removed from all of your button elements.
assert($('.btn-default').length === 0);
You should only use jQuery to remove this class from the element.
assert(code.match(/btn btn-default/g));
You should only remove the btn-default class.
assert(
  code.match(
    /\.[\v\s]*removeClass[\s\v]*\([\s\v]*('|")\s*btn-default\s*('|")[\s\v]*\)/gm
  )
);
--seed--
--seed-contents--
<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>
--solutions--
<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>