SCSS从@if内部更改超出范围的变量 [英] SCSS change variable out of scope from inside @if

问题描述

当您想修改函数范围之外的变量时，是否有任何解决方法?:

Is there any workaround for the situation, when you want to modify a variable outside of the scope of your function? :

$ui-theme: 'pink';

@if $ui-theme == "pink" {
    $ui-main: #eb82b0;  
    $ui-secondary: #fff5f9;
    $ui-third: #f6c2d9;
} @else {
    $ui-main: #ff8067;  
    $ui-secondary: #fff6e5;
    $ui-third: #ffb1a2;
}

a { color: $ui-main; background: $ui-secondary };

我想创建一个名为 ui-theme 的全局变量，它将在下面编写的所有其他代码中定义 $ui-main, $ui-secondary...定义.似乎在使用像 @if 这样的指令时也应用了变量范围.

I want to create a global variable called ui-theme which will define $ui-main, $ui-secondary... in all other code written below the definition. It seems that the variable scope is also applied when using directives like @if.

有人知道如何实现吗?

推荐答案

你必须在控制块之外初始化你的变量:

You have to initialize your variables outside of the control block:

$ui-theme: 'pink';

$ui-main: null;
$ui-secondary: null;
$ui-third: null;

@if $ui-theme == "pink" {
    $ui-main: #eb82b0;  
    $ui-secondary: #fff5f9;
    $ui-third: #f6c2d9;
} @else {
    $ui-main: #ff8067;  
    $ui-secondary: #fff6e5;
    $ui-third: #ffb1a2;
}

a { color: $ui-main; background: $ui-secondary };

输出:

a {
  color: #eb82b0;
  background: #fff5f9;
}

通过 @include 进行主题化可能更好，而不是像那样硬编码变量.

It might be nicer to just do theming via @include rather than hard coding variables like that.

_pink.scss:

_pink.scss:

$ui-main: #eb82b0;  
$ui-secondary: #fff5f9;
$ui-third: #f6c2d9;

styles.scss:

styles.scss:

@include "pink"; // or don't include anything if you want the default colors

$ui-main: #ff8067 !default;
$ui-secondary: #fff6e5 !default;
$ui-third: #ffb1a2 !default;

a { color: $ui-main; background: $ui-secondary };

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