Sass - 检查变量具有哪种值 [英] Sass - Check which kind of value a variable has

问题描述

假设我有一个变量:

$var: 5px;

但在代码中的某处，它的值已更改为可能的颜色、数字、em、rm 等.

but somewhere in code its value have changed in to possible color, number, em, rm etc.

是否有任何函数可以检测它具有哪种类型的值?

Is there any function to detect which type of value it has?

即

@if is-color($var) { //do something }

我知道 sass 中没有 is-color 函数，但是还有其他方法可以做到这一点或函数吗?

I know there is no is-color function in sass but are there other methods to do this or function?

推荐答案

来自 Sass 文档:

From the Sass documentation:

type_of($value)

type_of($value)

返回值的类型.

示例:

type-of(100px)  => number
type-of(asdf)   => string
type-of("asdf") => string
type-of(true)   => bool
type-of(#fff)   => color
type-of(blue)   => color

http://sass-lang.com/documentation/Sass/Script/Functions.html#type_of-instance_method

(注意 - 和 _ 在 Sass 函数中是可以互换的).

(note that - and _ is interchangeable in Sass functions).

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