140 lines
2.6 KiB
Markdown
140 lines
2.6 KiB
Markdown
---
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id: 587d7dbe367417b2b2512bb9
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title: Use @for to Create a Sass Loop
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challengeType: 0
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forumTopicId: 301462
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dashedName: use-for-to-create-a-sass-loop
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---
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# --description--
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The `@for` directive adds styles in a loop, very similar to a `for` loop in JavaScript.
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`@for` is used in two ways: "start through end" or "start to end". The main difference is that the "start **to** end" *excludes* the end number as part of the count, and "start **through** end" *includes* the end number as part of the count.
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Here's a start **through** end example:
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```scss
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@for $i from 1 through 12 {
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.col-#{$i} { width: 100%/12 * $i; }
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}
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```
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The `#{$i}` part is the syntax to combine a variable (`i`) with text to make a string. When the Sass file is converted to CSS, it looks like this:
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```scss
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.col-1 {
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width: 8.33333%;
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}
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.col-2 {
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width: 16.66667%;
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}
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...
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.col-12 {
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width: 100%;
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}
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```
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This is a powerful way to create a grid layout. Now you have twelve options for column widths available as CSS classes.
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# --instructions--
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Write a `@for` directive that takes a variable `$j` that goes from 1 **to** 6.
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It should create 5 classes called `.text-1` to `.text-5` where each has a `font-size` set to 15px multiplied by the index.
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# --hints--
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Your code should use the `@for` directive.
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```js
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assert(code.match(/@for /g));
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```
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Your `.text-1` class should have a `font-size` of 15px.
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```js
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assert($('.text-1').css('font-size') == '15px');
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```
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Your `.text-2` class should have a `font-size` of 30px.
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```js
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assert($('.text-2').css('font-size') == '30px');
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```
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Your `.text-3` class should have a `font-size` of 45px.
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```js
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assert($('.text-3').css('font-size') == '45px');
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```
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Your `.text-4` class should have a `font-size` of 60px.
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```js
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assert($('.text-4').css('font-size') == '60px');
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```
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Your `.text-5` class should have a `font-size` of 75px.
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```js
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assert($('.text-5').css('font-size') == '75px');
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```
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# --seed--
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## --seed-contents--
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```html
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<style type='text/scss'>
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</style>
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<p class="text-1">Hello</p>
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<p class="text-2">Hello</p>
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<p class="text-3">Hello</p>
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<p class="text-4">Hello</p>
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<p class="text-5">Hello</p>
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```
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# --solutions--
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```html
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<style type='text/scss'>
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@for $i from 1 through 5 {
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.text-#{$i} { font-size: 15px * $i; }
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}
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</style>
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<p class="text-1">Hello</p>
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<p class="text-2">Hello</p>
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<p class="text-3">Hello</p>
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<p class="text-4">Hello</p>
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<p class="text-5">Hello</p>
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```
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---
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```html
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<style type='text/scss'>
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@for $i from 1 to 6 {
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.text-#{$i} { font-size: 15px * $i; }
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}
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</style>
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<p class="text-1">Hello</p>
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<p class="text-2">Hello</p>
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<p class="text-3">Hello</p>
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<p class="text-4">Hello</p>
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<p class="text-5">Hello</p>
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```
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