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								---
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								id: bad87fee1348bd9aed108826
							 
						 
					
						
							
								
									
										
										
										
											2021-05-24 00:42:08 -07:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								title: Apunta a un hijo específico de un elemento usando jQuery
							 
						 
					
						
							
								
									
										
										
										
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								challengeType: 6
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								forumTopicId: 18315
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								required:
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								  - 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								    link: 'https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.2.0/animate.css'
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								dashedName: target-a-specific-child-of-an-element-using-jquery
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								---
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								# --description--
 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								Has visto por qué los atributos id son muy convenientes para apuntar con los selectores de jQuery. Pero no siempre tendrás tan buenos id's con los que trabajar.
							 
						 
					
						
							
								
									
										
										
										
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											2021-05-24 00:42:08 -07:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								Afortunadamente, jQuery tiene algunos otros trucos para apuntar a los elementos correctos.
							 
						 
					
						
							
								
									
										
										
										
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											2021-05-24 00:42:08 -07:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								jQuery usa selectores de CSS para apuntar elementos. El selector `target:nth-child(n)`  de CSS, te permite seleccionar todos los enésimos elementos con el tipo de elemento o la clase apuntada.
							 
						 
					
						
							
								
									
										
										
										
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											2021-09-07 07:47:37 -07:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								Así es como le darías al tercer elemento en cada "well" la clase de rebote:
							 
						 
					
						
							
								
									
										
										
										
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								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								$(".target:nth-child(3)").addClass("animated bounce");
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								```
							 
						 
					
						
							
								
									
										
										
										
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											2021-09-07 07:47:37 -07:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								Haz que el segundo niño en cada uno de sus elementos de "well" rebote. Debes seleccionar los hijos de los elementos con la clase `target` .
							 
						 
					
						
							
								
									
										
										
										
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								# --hints--
 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								El segundo elemento en tus elementos `target`  deben rebotar.
							 
						 
					
						
							
								
									
										
										
										
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								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								assert(
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								  $('.target:nth-child(2)').hasClass('animated') & & 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								    $('.target:nth-child(2)').hasClass('bounce')
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								);
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								Solo deben elegirse dos elementos.
							 
						 
					
						
							
								
									
										
										
										
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								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								assert($('.animated.bounce').length === 2);
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								Debes usar el selector `:nth-child()`  para modificar estos elementos.
							 
						 
					
						
							
								
									
										
										
										
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								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								assert(code.match(/\:nth-child\(/g));
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2021-09-07 07:47:37 -07:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								Solo debes usar jQuery para agregar estas clases al elemento.
							 
						 
					
						
							
								
									
										
										
										
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								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								assert(
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								  code.match(/\$\(".target:nth-child\(2\)"\)/g) ||
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								    code.match(/\$\('.target:nth-child\(2\)'\)/g) ||
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								    code.match(/\$\(".target"\).filter\(":nth-child\(2\)"\)/g) ||
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								    code.match(/\$\('.target'\).filter\(':nth-child\(2\)'\)/g)
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								);
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								# --seed--
 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								## --seed-contents--
 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								```html
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< script > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								  $(document).ready(function() {
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								    $("#target1 ").css("color", "red");
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								    $("#target1 ").prop("disabled", true);
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								    $("#target4 ").remove();
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								    $("#target2 ").appendTo("#right -well");
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								    $("#target5 ").clone().appendTo("#left -well");
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								    $("#target1 ").parent().css("background-color", "red");
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								    $("#right -well").children().css("color", "orange");
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								  });
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / 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() {
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								    $("#target1 ").css("color", "red");
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								    $("#target1 ").prop("disabled", true);
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								    $("#target4 ").remove();
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								    $("#target2 ").appendTo("#right -well");
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								    $("#target5 ").clone().appendTo("#left -well");
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								    $("#target1 ").parent().css("background-color", "red");
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								    $("#right -well").children().css("color", "orange");
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								    $(".target:nth-child(2)").addClass("animated bounce");
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								  });
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / 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 > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								```