131 lines
4.6 KiB
Markdown
131 lines
4.6 KiB
Markdown
---
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id: bad87fee1348bd9aedf08834
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title: Create a Set of Radio Buttons
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challengeType: 0
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videoUrl: 'https://scrimba.com/p/pVMPUv/cNWKvuR'
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forumTopicId: 16822
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---
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## Description
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<section id='description'>
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You can use <dfn>radio buttons</dfn> for questions where you want the user to only give you one answer out of multiple options.
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Radio buttons are a type of <code>input</code>.
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Each of your radio buttons can be nested within its own <code>label</code> element. By wrapping an <code>input</code> element inside of a <code>label</code> element it will automatically associate the radio button input with the label element surrounding it.
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All related radio buttons should have the same <code>name</code> attribute to create a radio button group. By creating a radio group, selecting any single radio button will automatically deselect the other buttons within the same group ensuring only one answer is provided by the user.
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Here's an example of a radio button:
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```html
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<label>
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<input type="radio" name="indoor-outdoor">Indoor
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</label>
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```
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It is considered best practice to set a <code>for</code> attribute on the <code>label</code> element, with a value that matches the value of the <code>id</code> attribute of the <code>input</code> element. This allows assistive technologies to create a linked relationship between the label and the child <code>input</code> element. For example:
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```html
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<label for="indoor">
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<input id="indoor" type="radio" name="indoor-outdoor">Indoor
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</label>
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```
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</section>
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## Instructions
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<section id='instructions'>
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Add a pair of radio buttons to your form, each nested in its own <code>label</code> element. One should have the option of <code>indoor</code> and the other should have the option of <code>outdoor</code>. Both should share the <code>name</code> attribute of <code>indoor-outdoor</code> to create a radio group.
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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: Your page should have two radio button elements.
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testString: assert($('input[type="radio"]').length > 1);
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- text: Your radio buttons should be given the <code>name</code> attribute of <code>indoor-outdoor</code>.
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testString: assert($('input[type="radio"]').filter("[name='indoor-outdoor']").length > 1);
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- text: Each of your two radio button elements should be nested in its own <code>label</code> element.
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testString: assert($('label > input[type="radio"]:only-child').length > 1);
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- text: Each of your <code>label</code> elements should have a closing tag.
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testString: assert((code.match(/<\/label>/g) && code.match(/<label/g) && code.match(/<\/label>/g).length === code.match(/<label/g).length));
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- text: One of your radio buttons should have the label <code>indoor</code>.
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testString: assert($("label").text().match(/indoor/gi));
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- text: One of your radio buttons should have the label <code>outdoor</code>.
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testString: assert($("label").text().match(/outdoor/gi));
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- text: Each of your radio button elements should be added within the <code>form</code> tag.
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testString: assert($("label").parent().get(0).tagName.match('FORM'));
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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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<h2>CatPhotoApp</h2>
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<main>
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<p>Click here to view more <a href="#">cat photos</a>.</p>
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<a href="#"><img src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
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<p>Things cats love:</p>
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<ul>
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<li>cat nip</li>
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<li>laser pointers</li>
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<li>lasagna</li>
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</ul>
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<p>Top 3 things cats hate:</p>
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<ol>
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<li>flea treatment</li>
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<li>thunder</li>
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<li>other cats</li>
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</ol>
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<form action="/submit-cat-photo">
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<input type="text" placeholder="cat photo URL" required>
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<button type="submit">Submit</button>
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</form>
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</main>
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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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<h2>CatPhotoApp</h2>
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<main>
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<p>Click here to view more <a href="#">cat photos</a>.</p>
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<a href="#"><img src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
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<p>Things cats love:</p>
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<ul>
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<li>cat nip</li>
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<li>laser pointers</li>
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<li>lasagna</li>
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</ul>
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<p>Top 3 things cats hate:</p>
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<ol>
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<li>flea treatment</li>
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<li>thunder</li>
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<li>other cats</li>
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</ol>
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<form action="/submit-cat-photo">
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<label for="indoor"><input id="indoor" type="radio" name="indoor-outdoor"> Indoor</label>
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<label for="outdoor"><input id="outdoor" type="radio" name="indoor-outdoor"> Outdoor</label><br>
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<input type="text" placeholder="cat photo URL" required>
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<button type="submit">Submit</button>
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</form>
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</main>
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```
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</section>
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