My question is really simple. How can we create rules inside a function. For example we want to create 5 classes for font-size. We will do like
#for $i from 0 through 4{
.size#{$i}{
font-size:($i * 10)
}
}
But what if we want to do that using a function. Actually I want to do that the same for other properties as I did for font-size. So I create a function which will receive some data and then create rulesets.But problem is that I can't use rulesets inside function.
#function createRuleSets(){
#for $i from 0 through 4{
.size#{$i}{
font-size:($i * 10)
}
}
}
Just use a #mixin instead of a #function:
#mixin createRuleSets( $base: 1px ){
#for $i from 0 through 4{
.size#{$i}{
font-size:($base * $i * 10)
}
}
}
#include createRuleSets( 20px );
Functions return values, not rulesets. Mixins allow you to mix in rulesets. https://sass-lang.com/documentation/at-rules/mixin
(I added an argument to the mixin to show how they actually work almost exactly like functions, except for rulesets.)
Related
I want to get data attr which is a number from HTML in my scss file and do a for loop on elements.
so here's what i did :
HTML :
<figure class="inner" data-attr="8"></figure>
SCSS
[data-attr] {
$no: attr('data-attr') !global;
}
and
#for $i from 0 through $no {
&:nth-of-type(#{$i}) {
left: $no;
}
}
but I got an error :
Error: attr("data-attr") is not an integer.$no: attr('data-attr') !global
You'll need to take a different approach.
SASS is a pre-processor that compiles into a CSS file. You can't use a SASS loop to generate CSS output based on a value that you don't have at the time of compilation.
Without knowing what you're actually attempting to do, it's not possible to suggest an alternative solution either.
In the Sass docs, we have this:
#for $i from 1 through 3 {
.item-#{$i} { width: 2em * $i; }
}
I understand the loop. But I don't understand where in .item-#{$i} why the $i variable is encased in #{}? Why not just write $i?
I've looked around and can't find anywhere that explains this.
It's called Interpolation, and is needed when using a variable in a selector or property name. See http://sass-lang.com/documentation/file.SASS_REFERENCE.html#interpolation_
I have the following mapping to contain all of the colours from my theme:
$_base-ocean:rgb(13,176,184);
$_base-hover:10%;
$themes: (
ocean: (
base: $_base-ocean,
hover: darken($_base-ocean, $_base-hover)
)
);
I know how to use an #each loop to get the key/value information from a mapping, but how can I directly access the value of a mapping without using a loop? I tried using square brackets like you would in other languages like JavaScript:
#each $name, $colors in $themes {
[data-page="home"] {
#slider-pagers{
a.#{$name} {
background-color: $colors[base]; // <- line 21
}
}
}
}
But I get a syntax error instead:
error sass/test.scss (Line 21: Invalid CSS after "...d-color: $color": expected ";", was "[base];")
You have the use the map-get function. Sass does not provide a special syntax for accessing values of a mapping.
#each $name, $colors in $themes {
[data-page="home"] {
#slider-pagers{
a.#{$name} {
background-color: map-get($colors, base);
}
}
}
}
Now you get the following output:
[data-page="home"] #slider-pagers a.ocean {
background-color: #0db0b8;
}
A good practice when using SassScript maps (not "source maps"; those are different) is to always quote the keys. For example:
$site-global: (
"ocean": (
"base": $_base-ocean,
"hover": darken($_base-ocean, $_base-hover)
)
);
In order to be compatible with CSS, Sass interprets some unquoted identifiers (including ocean) as color names and translates them internally to color values. When emitting compressed output, Sass will try to produce the smallest possible representation of those colors, which in this case is a hex code. Quoting the keys makes it clear that they should always be strings and should always be emitted with their string values.
Fixed Issue 1 !
It was a case of doing another map-get within a map-get. Once done, I had to reference the default value (this being base). As long as all my default values had a base value this seems to work fine:
#each $theme-colour, $color in $site-global {
[data-page="home"]{
#slider-pagers a.#{$theme-colour}{
background-color:map-get(map-get($site-global, $theme-colour), base);
}
}
}
How it still fails to minify when this code:
#{$variable_here}
Funny enough this code does not:
#slider-pagers a #{$theme-colour}{
or
#slider-pagers a#{$theme-colour}{
Thanks for responding, if anyone knows the is compiling issue that would be great.
This question already has an answer here:
Use array value as variable [duplicate]
(1 answer)
Closed 8 years ago.
I am trying to set up a loop that will create a set of classes, using another loop that I've set up, for each of the breakpoints I've defined. These are the BP's
$mobileMedium : 480px;
$tabletVertical : 768px;
$desktopNormal : 1024px;
$desktopWide : 1200px;
And this is my scss.
#each $bpName in "mobileMedium", "tabletVertical", "desktopNormal", "desktopWide"{
#include breakpoint($$bpName) {
#include generate("$bpName", "Container", "width");
}
}
I was hoping for something like this (example):
#media (min-width: 768px) {
.tabletVerticalContainer-1_12 {
width: 8.33333%;
}
But this is what Terminal returns:
error sass/screen.scss (Line 36 of sass/_grid.scss:
Invalid CSS after "...ude breakpoint(": expected ")", was "$$bpName) {")
I guess it boils down to how I can combine the both text (the '$') and the variable in the argument.
Any ideas?
You can't do variable name interpolation, although Sass 3.3 will introduce a map feature that you'll be able to use to get your desired effect (see https://github.com/nex3/sass/issues/642).
For now, instead of iterating over a list of strings, try iterating over a list of lists of string/variable pairs:
#each $breakpoint in "mobileMedium" $mobileMedium, "tabletVertical" $tabletVertical, "desktopNormal" $desktopNormal, "desktopWide" $desktopWide {
#include breakpoint(nth($breakpoint, 2)) {
#include generate(nth($breakpoint, 1), "Container", "width");
}
}
(I don't know what the generate mixin does, I assume from your example that you want the first argument to be a string though.)
I'm trying to write a sass #function function_name($prefix, $list_of_values)
which will return a list of values, where each value from $list_of_values will be prefixed with $prefix and suffixed with comma, except the last one. Possibly it already exist in sass or compass and I just don't know about it.
Here's one way of writing it:
#function prefixer($prefix, $list) {
$new-list: ();
#for $i from 1 to length($list) {
$new-list: append($new-list, $prefix + nth($list, $i), comma);
}
$new-list: append($new-list, nth($list, length($list), comma));
}