5.1 KiB
		
	
	
	
	
	
	
	
			
		
		
	
	
			5.1 KiB
		
	
	
	
	
	
	
	
id, title, required, challengeType, forumTopicId, localeTitle
| id | title | required | challengeType | forumTopicId | localeTitle | |||
|---|---|---|---|---|---|---|---|---|
| bad87fee1348bd9aed108826 | Target a Specific Child of an Element Using jQuery | 
  | 
6 | 18315 | Назначение определенного дочернего элемента элемента с помощью jQuery | 
Description
target:nth-child(n) селектор target:nth-child(n) CSS позволяет вам выбрать все n-ые элементы с целевым классом или типом элемента. Вот как вы бы дали третий элемент в каждой скважине класс отказов: $(".target:nth-child(3)").addClass("animated bounce"); Сделайте второго ребенка в каждом из элементов вашего колодца. Вы должны выбрать дочерние элементы элементов с target классом.
Instructions
Tests
tests:
  - text: The second element in your <code>target</code> elements should bounce.
    testString: assert($(".target:nth-child(2)").hasClass("animated") && $(".target:nth-child(2)").hasClass("bounce"));
  - text: Only two elements should bounce.
    testString: assert($(".animated.bounce").length === 2);
  - text: You should use the <code>:nth-child()</code> selector to modify these elements.
    testString: assert(code.match(/\:nth-child\(/g));
  - text: Only use jQuery to add these classes to the element.
    testString: 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));
Challenge Seed
<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>
Solution
<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>