3.0 KiB
3.0 KiB
id | title | required | challengeType | |||||
---|---|---|---|---|---|---|---|---|
587d7dbf367417b2b2512bba | Use @each to Map Over Items in a List |
|
0 |
Description
@for
directive uses a starting and ending value to loop a certain number of times. Sass also offers the @each
directive which loops over each item in a list or map.
On each iteration, the variable gets assigned to the current value from the list or map.
@each $color in blue, red, green {A map has slightly different syntax. Here's an example:
.#{$color}-text {color: $color;}
}
$colors: (color1: blue, color2: red, color3: green);Note that the
@each $key, $color in $colors {
.#{$color}-text {color: $color;}
}
$key
variable is needed to reference the keys in the map. Otherwise, the compiled CSS would have color1
, color2
... in it.
Both of the above code examples are converted into the following CSS:
.blue-text {
color: blue;
}
.red-text {
color: red;
}
.green-text {
color: green;
}
Instructions
@each
directive that goes through a list: blue, black, red
and assigns each variable to a .color-bg
class, where the "color" part changes for each item.
Each class should set the background-color
the respective color.
Tests
tests:
- text: Your code should use the <code>@each</code> directive.
testString: 'assert(code.match(/@each /g), ''Your code should use the <code>@each</code> directive.'');'
- text: Your <code>.blue-bg</code> class should have a <code>background-color</code> of blue.
testString: 'assert($(''.blue-bg'').css(''background-color'') == ''rgb(0, 0, 255)'', ''Your <code>.blue-bg</code> class should have a <code>background-color</code> of blue.'');'
- text: Your <code>.black-bg</code> class should have a <code>background-color</code> of black.
testString: 'assert($(''.black-bg'').css(''background-color'') == ''rgb(0, 0, 0)'', ''Your <code>.black-bg</code> class should have a <code>background-color</code> of black.'');'
- text: Your <code>.red-bg</code> class should have a <code>background-color</code> of red.
testString: 'assert($(''.red-bg'').css(''background-color'') == ''rgb(255, 0, 0)'', ''Your <code>.red-bg</code> class should have a <code>background-color</code> of red.'');'
Challenge Seed
<style type='text/sass'>
div {
height: 200px;
width: 200px;
}
</style>
<div class="blue-bg"></div>
<div class="black-bg"></div>
<div class="red-bg"></div>
Solution
// solution required