78 lines
4.0 KiB
Markdown
78 lines
4.0 KiB
Markdown
---
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id: 587d7dbe367417b2b2512bb8
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title: Use @if and @else to Add Logic To Your Styles
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required:
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- src: 'https://cdnjs.cloudflare.com/ajax/libs/sass.js/0.10.9/sass.sync.min.js'
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raw: true
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challengeType: 0
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---
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## Description
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<section id='description'>
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The <code>@if</code> directive in Sass is useful to test for a specific case - it works just like the <code>if</code> statement in JavaScript</code>.
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<blockquote>@mixin make-bold($bool) {<br> @if $bool == true {<br> font-weight: bold;<br> }<br>}</blockquote>
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And just like in JavaScript, <code>@else if</code> and <code>@else</code> test for more conditions:
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<blockquote>@mixin text-effect($val) {<br> @if $val == danger {<br> color: red;<br> }<br> @else if $val == alert {<br> color: yellow;<br> }<br> @else if $val == success {<br> color: green;<br> }<br> @else {<br> color: black;<br> }<br>}</blockquote>
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</section>
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## Instructions
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<section id='instructions'>
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Create a <code>mixin</code> called <code>border-stroke</code> that takes a parameter <code>$val</code>. The <code>mixin</code> should check for the following conditions using <code>@if</code>, <code>@else if</code>, and <code>@else</code>:
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<blockquote>light - 1px solid black<br>medium - 3px solid black<br>heavy - 6px solid black<br>none - no border</blockquote>
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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 code should declare a <code>mixin</code> named <code>border-stroke</code> which has a parameter named <code>$val</code>.
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testString: 'assert(code.match(/@mixin\s+?border-stroke\s*?\(\s*?\$val\s*?\)\s*?{/gi), "Your code should declare a <code>mixin</code> named <code>border-stroke</code> which has a parameter named <code>$val</code>.");'
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- text: 'Your <code>mixin</code> should have an <code>@if</code> statement to check if <code>$val</code> is light, and to set the <code>border</code> to 1px solid black.'
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testString: 'assert(code.match(/@if\s+?\$val\s*?===?\s*?light\s*?{\s*?border\s*?:\s*?1px\s+?solid\s+?black\s*?;\s*?}/gi), "Your <code>mixin</code> should have an <code>@if</code> statement to check if <code>$val</code> is light, and to set the <code>border</code> to 1px solid black.");'
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- text: 'Your <code>mixin</code> should have an <code>@else if</code> statement to check if <code>$val</code> is medium, and to set the <code>border</code> to 3px solid black.'
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testString: 'assert(code.match(/@else\s+?if\s+?\$val\s*?===?\s*?medium\s*?{\s*?border\s*?:\s*?3px\s+?solid\s+?black\s*?;\s*?}/gi), "Your <code>mixin</code> should have an <code>@else if</code> statement to check if <code>$val</code> is medium, and to set the <code>border</code> to 3px solid black.");'
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- text: 'Your <code>mixin</code> should have an <code>@else if</code> statement to check if <code>$val</code> is heavy, and to set the <code>border</code> to 6px solid black.'
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testString: 'assert(code.match(/@else\s+?if\s+?\$val\s*?===?\s*?heavy\s*?{\s*?border\s*?:\s*?6px\s+?solid\s+?black\s*?;\s*?}/gi), "Your <code>mixin</code> should have an <code>@else if</code> statement to check if <code>$val</code> is heavy, and to set the <code>border</code> to 6px solid black.");'
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- text: Your <code>mixin</code> should have an <code>@else</code> statement to set the <code>border</code> to none.
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testString: 'assert(code.match(/@else\s*?{\s*?border\s*?:\s*?none\s*?;\s*?}/gi), "Your <code>mixin</code> should have an <code>@else</code> statement to set the <code>border</code> to none.");'
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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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<style type='text/sass'>
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#box {
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width: 150px;
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height: 150px;
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background-color: red;
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@include border-stroke(medium);
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}
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</style>
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<div id="box"></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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```js
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// solution required
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```
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</section>
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