99 lines
3.4 KiB
Markdown
99 lines
3.4 KiB
Markdown
---
|
|
id: bad87fee1348bd9aed108826
|
|
title: Target a Specific Child of an Element Using jQuery
|
|
required:
|
|
- link: 'https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.2.0/animate.css'
|
|
challengeType: 6
|
|
---
|
|
|
|
## Description
|
|
<section id='description'>
|
|
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.
|
|
Fortunately, jQuery has some other tricks for targeting the right elements.
|
|
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.
|
|
Here's how you would give the third element in each well the bounce class:
|
|
<code>$(".target:nth-child(3)").addClass("animated bounce");</code>
|
|
Make the second child in each of your well elements bounce. You must select the elements' children with the <code>target</code> class.
|
|
</section>
|
|
|
|
## Instructions
|
|
<section id='instructions'>
|
|
|
|
</section>
|
|
|
|
## Tests
|
|
<section id='tests'>
|
|
|
|
```yml
|
|
tests:
|
|
- text: The second element in your <code>target</code> elements should bounce.
|
|
testString: assert($(".target:nth-child(2)").hasClass("animated") && $(".target:nth-child(2)").hasClass("bounce"), 'The second element in your <code>target</code> elements should bounce.');
|
|
- text: Only two elements should bounce.
|
|
testString: assert($(".animated.bounce").length === 2, 'Only two elements should bounce.');
|
|
- text: You should use the <code>:nth-child()</code> selector to modify these elements.
|
|
testString: assert(code.match(/\:nth-child\(/g), 'You should use the <code>:nth-child()</code> selector to modify these elements.');
|
|
- 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), 'Only use jQuery to add these classes to the element.');
|
|
|
|
```
|
|
|
|
</section>
|
|
|
|
## Challenge Seed
|
|
<section id='challengeSeed'>
|
|
|
|
<div id='html-seed'>
|
|
|
|
```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>
|
|
```
|
|
|
|
</div>
|
|
|
|
|
|
|
|
</section>
|
|
|
|
## Solution
|
|
<section id='solution'>
|
|
|
|
```js
|
|
// solution required
|
|
```
|
|
</section>
|