“不是‘map-get’的地图";将新元素添加到映射后出错 [英] "Not a map for `map-get`" error after adding new elements to a mapping
问题描述
如何将映射合并到 sass 中的现有映射中?
How can I merge a mapping into an existing mapping in sass?
我目前在 _config
部分中使用 sass 映射来定义我的断点,例如:
I am currently using sass maps in a _config
partial to define my breakpoints, for example:
$breakpoints: (
small: 35rem,
medium: 55rem,
large: 75rem,
xlarge: 90rem,
element-breakpoint-1: 100rem,
element-breakpoint-2: 110rem
);
@mixin breakpoint($width) {
@media screen and (min-width: map-get($breakpoints, $width)) {
@content;
}
}
.element {
width: 100px;
@include breakpoint(element-breakpoint-1) {
width: 200px;
}
@include breakpoint(element-breakpoint-2) {
width: 300px;
}
}
理想情况下,我希望能够向现有映射添加新断点:
Ideally I would like to be able to add new breakpoints to the existing mapping:
@function array-append($list, $value) {
@return join($list, $value);
}
$breakpoints: array-append($breakpoints, (element-breakpoint-1: 100rem, element-breakpoint-1: 110rem));
问题是断点mixin没有看到$breakpoints
列表中的新值,SASS抛出如下错误:
The issue is that the breakpoint mixin does not see the new values in the $breakpoints
list and SASS throws the following error:
错误:$map: (("small" 35rem), ("medium" 55rem), ("large" 75rem), ("xlarge" 90rem), ("element-breakpoint-1" 100rem)) is not`map-get' 的地图
Error: $map: (("small" 35rem), ("medium" 55rem), ("large" 75rem), ("xlarge" 90rem), ("element-breakpoint-1" 100rem)) is not a map for `map-get'
推荐答案
您正在寻找的函数是 map-merge()
,而不是 join()
.join()
函数用于将列表连接在一起,并导致您的映射转换为列表列表.
The function you're looking for is map-merge()
, not join()
. The join()
function is for joining lists together and is causing your mapping to get converted to a list of lists.
$fix-mqs: false;
$breakpoints: (
small: 35rem,
medium: 55rem,
large: 75rem,
xlarge: 90rem
);
// map-merge here, not join
$breakpoints: map-merge($breakpoints, (element-breakpoint-1: 100rem, element-breakpoint-2: 110rem));
@mixin breakpoint($width) {
@if $fix-mqs {
@if $fix-mqs >= map-get($breakpoints, $width) {
@content;
}
}
@else {
@media screen and (min-width: map-get($breakpoints, $width)) {
@content;
}
}
}
@include breakpoint(element-breakpoint-2) {
.foo {
color: red;
}
}
输出:
@media screen and (min-width: 110rem) {
.foo {
color: red;
}
}
这篇关于“不是‘map-get’的地图";将新元素添加到映射后出错的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!