mirror of
https://github.com/danog/sass-site.git
synced 2024-12-14 18:37:35 +01:00
22 lines
916 B
Markdown
22 lines
916 B
Markdown
|
---
|
||
|
|
title: Flow Control Rules
|
||
|
|
introduction: >
|
||
|
|
Sass provides a number of at-rules that make it possible to control whether
|
||
|
|
styles get emitted, or to emit them multiple times with small variations. They
|
||
|
|
can also be used in [mixins](/documentation/at-rules/mixin) and [functions](/documentation/at-rules/function) to write small
|
||
|
|
algorithms to make writing your Sass easier. Sass supports four flow control
|
||
|
|
rules:
|
||
|
|
---
|
||
|
|
|
||
|
|
* [`@if`](/documentation/at-rules/control/if) controls whether or not a block is evaluated.
|
||
|
|
|
||
|
|
* [`@each`](/documentation/at-rules/control/each) evaluates a block for each element in a [list][] or
|
||
|
|
each pair in a [map][].
|
||
|
|
|
||
|
|
* [`@for`](/documentation/at-rules/control/for) evaluates a block a certain number of times.
|
||
|
|
|
||
|
|
* [`@while`](/documentation/at-rules/control/while) evaluates a block until a certain condition is met.
|
||
|
|
|
||
|
|
[list]: /documentation/values/lists
|
||
|
|
[map]: /documentation/values/maps
|