3ec1fe8ea7
This commit adds the pre-existing challenge guide topics in the forum to the forntmatter of their challenge markdown files.
136 lines
4.5 KiB
Markdown
136 lines
4.5 KiB
Markdown
---
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id: bad87fee1348bd9aed108826
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title: Target a Specific Child of an Element Using jQuery
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required:
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- link: 'https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.2.0/animate.css'
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challengeType: 6
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forumTopicId: 18315
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---
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## Description
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<section id='description'>
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You've seen why id attributes are so convenient for targeting with jQuery selectors. But you won't always have such neat ids to work with.
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Fortunately, jQuery has some other tricks for targeting the right elements.
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jQuery uses CSS Selectors to target elements. The <code>target:nth-child(n)</code> CSS selector allows you to select all the nth elements with the target class or element type.
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Here's how you would give the third element in each well the bounce class:
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<code>$(".target:nth-child(3)").addClass("animated bounce");</code>
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Make the second child in each of your well elements bounce. You must select the elements' children with the <code>target</code> class.
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</section>
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## Instructions
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<section id='instructions'>
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: The second element in your <code>target</code> elements should bounce.
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testString: assert($(".target:nth-child(2)").hasClass("animated") && $(".target:nth-child(2)").hasClass("bounce"));
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- text: Only two elements should bounce.
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testString: assert($(".animated.bounce").length === 2);
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- text: You should use the <code>:nth-child()</code> selector to modify these elements.
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testString: assert(code.match(/\:nth-child\(/g));
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- text: Only use jQuery to add these classes to the element.
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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));
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='html-seed'>
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```html
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<script>
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$(document).ready(function() {
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$("#target1").css("color", "red");
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$("#target1").prop("disabled", true);
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$("#target4").remove();
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$("#target2").appendTo("#right-well");
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$("#target5").clone().appendTo("#left-well");
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$("#target1").parent().css("background-color", "red");
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$("#right-well").children().css("color", "orange");
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});
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</script>
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<!-- Only change code above this line. -->
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<div class="container-fluid">
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<h3 class="text-primary text-center">jQuery Playground</h3>
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<div class="row">
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<div class="col-xs-6">
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<h4>#left-well</h4>
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<div class="well" id="left-well">
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<button class="btn btn-default target" id="target1">#target1</button>
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<button class="btn btn-default target" id="target2">#target2</button>
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<button class="btn btn-default target" id="target3">#target3</button>
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</div>
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</div>
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<div class="col-xs-6">
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<h4>#right-well</h4>
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<div class="well" id="right-well">
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<button class="btn btn-default target" id="target4">#target4</button>
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<button class="btn btn-default target" id="target5">#target5</button>
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<button class="btn btn-default target" id="target6">#target6</button>
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</div>
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</div>
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</div>
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</div>
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```html
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<script>
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$(document).ready(function() {
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$("#target1").css("color", "red");
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$("#target1").prop("disabled", true);
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$("#target4").remove();
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$("#target2").appendTo("#right-well");
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$("#target5").clone().appendTo("#left-well");
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$("#target1").parent().css("background-color", "red");
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$("#right-well").children().css("color", "orange");
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$(".target:nth-child(2)").addClass("animated bounce");
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});
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</script>
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<!-- Only change code above this line. -->
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<div class="container-fluid">
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<h3 class="text-primary text-center">jQuery Playground</h3>
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<div class="row">
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<div class="col-xs-6">
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<h4>#left-well</h4>
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<div class="well" id="left-well">
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<button class="btn btn-default target" id="target1">#target1</button>
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<button class="btn btn-default target" id="target2">#target2</button>
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<button class="btn btn-default target" id="target3">#target3</button>
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</div>
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</div>
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<div class="col-xs-6">
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<h4>#right-well</h4>
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<div class="well" id="right-well">
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<button class="btn btn-default target" id="target4">#target4</button>
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<button class="btn btn-default target" id="target5">#target5</button>
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<button class="btn btn-default target" id="target6">#target6</button>
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</div>
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</div>
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</div>
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</div>
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```
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</section>
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