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css – Sass:选择具有多个嵌套选择器的父元素(css类选择器如何嵌套)

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本文将为您提供关于css–Sass:选择具有多个嵌套选择器的父元素的详细介绍,我们还将为您解释css类选择器如何嵌套的相关知识,同时,我们还将为您提供关于Cannotdownloadhttps//gi

本文将为您提供关于css – Sass:选择具有多个嵌套选择器的父元素的详细介绍,我们还将为您解释css类选择器如何嵌套的相关知识,同时,我们还将为您提供关于Cannot download https//github.com/sass/node-sass/releases/download/v4.13.0/win32-x64-72_binding.node、CSS calc()函数中的 Sass 变量 - Sass Variable in CSS calc () function、Dart Sass 失败并出现以下错误:未定义变量 SASS、Dart sass 的 Bootstrap 5 sass的实用信息。

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css – Sass:选择具有多个嵌套选择器的父元素(css类选择器如何嵌套)

css – Sass:选择具有多个嵌套选择器的父元素(css类选择器如何嵌套)

这是我最终要做的事情:

.books,.dvds,.magazines {
  article &.books {
    /* Wanting the selector to only be ".books article" */
  }
  article {
    /* Can apply to any of the `article` tags under .books,.dvds and .magazines */
  }
}

我有一些嵌套的选择器,而不是打破一个新的.books文章选择器,我想保持嵌套,但仍然只针对.books下的文章元素.

我确实尝试了这个,但它的确有效,但是输出的是.books.books文章,这篇文章是多余的,让我感到畏缩:

.books,.magazines {
    &.books article {
        /* Outputs ".books.books article,.dvds.books article,.magazines.books article"...boooo,hisssss */
    }
}

解决方法

更像是什么:

article {

  .books &,.dvds &,.magazines & {
    /* book,dvd,magazine shared stuff */
  }

  .books & {
    /* book stuff */
  }

}

编译为:

.books article,.dvds article,.magazines article {
  /* book,magazine shared stuff */
}
.books article {
  /* book stuff */
}

Cannot download https//github.com/sass/node-sass/releases/download/v4.13.0/win32-x64-72_binding.node

Cannot download https//github.com/sass/node-sass/releases/download/v4.13.0/win32-x64-72_binding.node

最近在对一个开源的项目前端代码进行打包。结果老是 出现了上面的问题,导致打包失败

# Cannot download https//github.com/sass/node-sass/releases/download/v4.13.0/win32-x64-72_binding.node

确保网络不能太慢

昨晚WIFI太慢了。。。

确保以管理员身份执行命名

特别是 win10 ,执行 前端命名如果不以超级管理员身份执行。那么 可能会导致执行失败

配置npm 淘宝镜像

npm config set registry https://registry.npm.taobao.org 参考 参考网友的
提高下载速度

通过 npm 安装 node-sass

npm uninstall node-sass && npm install node-sass
很多网页都说 通过git 去下载然后手动安装 node-sass , 试过了,并没有用。就这样直接安装就可以了。
安装好直接就可以进入项目目录下面 去执行 npm install 等操作了

可以指定 node-sass 版本安装

node-sass 5 不兼容 node-sass 4 的。如果npm install 报错,可以根据提示信息 指定版本配置
npm uninstall node-sass && npm install node-sass@4.14.1 --save

参考资料

node-sass 安装
sass git下载
指定node-sass 安装

最终还是不行。那么就 使用 npm yarn 来构建了

前端说 yarn 构建更好。 更稳

CSS calc()函数中的 Sass 变量 - Sass Variable in CSS calc () function

CSS calc()函数中的 Sass 变量 - Sass Variable in CSS calc () function

问题:

I''m trying to use the calc() function in a Sass stylesheet, but I''m having some issues. 我正在尝试在 Sass 样式表中使用 calc() 函数,但是遇到了一些问题。 Here''s my code: 这是我的代码:

$body_padding: 50px

body
    padding-top: $body_padding
    height: calc(100% - $body_padding)

If I use the literal 50px instead of my body_padding variable, I get exactly what I want. 如果我使用文字 50px 而不是我的 body_padding 变量,那么我得到的正是我想要的。 However, when I switch to the variable, this is the output: 但是,当我切换到变量时,这是输出:

body {
    padding-top: 50px;
    height: calc(100% - $body_padding); }

How can I get Sass to recognize that it needs to replace the variable within the calc function? 如何让 Sass 认识到它需要替换 calc 函数中的变量?


解决方案:

参考一: https://stackoom.com/question/1DRy3/CSS-calc - 函数中的 Sass 变量
参考二: https://oldbug.net/q/1DRy3/Sass-Variable-in-CSS-calc-function

Dart Sass 失败并出现以下错误:未定义变量 SASS

Dart Sass 失败并出现以下错误:未定义变量 SASS

如何解决Dart Sass 失败并出现以下错误:未定义变量 SASS

我不明白这个编译错误描述的是什么,因为我确实定义了 SASS 变量:

Dart Sass 失败并出现以下错误:未定义变量。 ╷ 64│颜色:$sc-blue-light; │ ^^^^^^^^^^^^^^^ ╵ _partials/navigation/_search.scss 64:12 @use style.scss 65:1 根样式表

_utilities.scss

  1. $sc-blue-light: #5BC2E7;

_search.scss

  1. .search {
  2. color: $sc-blue-light;
  3. }

_style.scss(主样式表)

  1. @use ''_partials/base/_utilities'';
  2. @use ''_partials/navigation/_search'';

首先加载实用程序,这是我在其他答案中阅读的内容,但不适用于此处。文件路径正确。

我所有的其他样式都可以编译。就在我开始使用变量时,出现此错误。

有什么想法吗?

解决方法

TL;DR

也在 @use 中的文件顶部添加 _search.scss 规则。

带命名空间

  1. @use ''_partials/base/_utilities'';
  2. .search {
  3. color: utilities.$sc-blue-light;
  4. }

或没有命名空间

  1. @use ''_partials/base/_utilities'' as *;
  2. .search {
  3. color: $sc-blue-light;
  4. }

引自官方 sass

使用@use 加载的成员(变量、函数和mixin)只是 在加载它们的样式表中可见。其他样式表将需要 如果他们也想访问它们,请编写自己的@use 规则。

最简单的@use规则写成@use "",加载模块 在给定的 URL。以这种方式加载的任何样式都将被准确包含 一次在编译的 CSS 输出中,无论这些样式有多少次 已加载。

了解sass @use members
阅读sass @use namespace

Dart sass 的 Bootstrap 5 sass

Dart sass 的 Bootstrap 5 sass

如何解决Dart sass 的 Bootstrap 5 sass

我正在尝试在 Django 项目中通过 Dart-sass 设置 Bootstrap 5 sass。

当我开始编译时,我收到了这条消息 “弃用警告:不推荐使用 / 进行除法,并将在 Dart Sass 2.0.0 中删除。”

我开始按照建议将所有文件中的 / 替换为,以解决问题。

直到我遇到问题,我都无法在供应商 >> _rfs.scss 文件中修复它

Error: $number: 1rem,16rem is not a number.
    ╷
211 │         @if abs($value) <= $rfs-base-value or not $enable-rfs {
    │             ^^^^^^^^^^^
    ╵

这是_rfs.scss

// stylelint-disable property-blacklist,scss/dollar-variable-default

// SCSS RFS mixin
//
// Automated responsive values for font sizes,paddings,margins and much more
//
// Licensed under MIT (https://github.com/twbs/rfs/blob/master/LICENSE)

// Configuration

// Base value
$rfs-base-value: 1.25rem !default;
$rfs-unit: rem !default;

@if $rfs-unit != rem and $rfs-unit != px {
  @error "`#{$rfs-unit}` is not a valid unit for $rfs-unit. Use `px` or `rem`.";
}

// Breakpoint at where values start decreasing if screen width is smaller
$rfs-breakpoint: 1200px !default;
$rfs-breakpoint-unit: px !default;

@if $rfs-breakpoint-unit != px and $rfs-breakpoint-unit != em and $rfs-breakpoint-unit != rem {
  @error "`#{$rfs-breakpoint-unit}` is not a valid unit for $rfs-breakpoint-unit. Use `px`,`em` or `rem`.";
}

// Resize values based on screen height and width
$rfs-two-dimensional: false !default;

// Factor of decrease
$rfs-factor: 10 !default;

@if type-of($rfs-factor) != number or $rfs-factor <= 1 {
  @error "`#{$rfs-factor}` is not a valid  $rfs-factor,it must be greater than 1.";
}

// Mode. Possibilities: "min-media-query","max-media-query"
$rfs-mode: min-media-query !default;

// Generate enable or disable classes. Possibilities: false,"enable" or "disable"
$rfs-class: false !default;

// 1 rem = $rfs-rem-value px
$rfs-rem-value: 16 !default;

// Safari iframe resize bug: https://github.com/twbs/rfs/issues/14
$rfs-safari-iframe-resize-bug-fix: false !default;

// disable RFS by setting $enable-rfs to false
$enable-rfs: true !default;

// Cache $rfs-base-value unit
$rfs-base-value-unit: unit($rfs-base-value);

// Remove px-unit from $rfs-base-value for calculations
@if $rfs-base-value-unit == px {
  $rfs-base-value: $rfs-base-value,($rfs-base-value * 0 + 1);
}
@else if $rfs-base-value-unit == rem {
  $rfs-base-value: $rfs-base-value,($rfs-base-value * 0 + 1,$rfs-rem-value);
}

// Cache $rfs-breakpoint unit to prevent multiple calls
$rfs-breakpoint-unit-cache: unit($rfs-breakpoint);

// Remove unit from $rfs-breakpoint for calculations
@if $rfs-breakpoint-unit-cache == px {
  $rfs-breakpoint: $rfs-breakpoint,($rfs-breakpoint * 0 + 1);
}
@else if $rfs-breakpoint-unit-cache == rem or $rfs-breakpoint-unit-cache == "em" {
  $rfs-breakpoint: $rfs-breakpoint,($rfs-breakpoint * 0 + 1,$rfs-rem-value);
}

// Calculate the media query value
$rfs-mq-value: if($rfs-breakpoint-unit == px,#{$rfs-breakpoint}px,#{$rfs-breakpoint,$rfs-rem-value}#{$rfs-breakpoint-unit});
$rfs-mq-property-width: if($rfs-mode == max-media-query,max-width,min-width);
$rfs-mq-property-height: if($rfs-mode == max-media-query,max-height,min-height);

// Internal mixin used to determine which media query needs to be used
@mixin _rfs-media-query {
  @if $rfs-two-dimensional {
    @if $rfs-mode == max-media-query {
      @media (#{$rfs-mq-property-width}: #{$rfs-mq-value}),(#{$rfs-mq-property-height}: #{$rfs-mq-value}) {
        @content;
      }
    }
    @else {
      @media (#{$rfs-mq-property-width}: #{$rfs-mq-value}) and (#{$rfs-mq-property-height}: #{$rfs-mq-value}) {
        @content;
      }
    }
  }
  @else {
    @media (#{$rfs-mq-property-width}: #{$rfs-mq-value}) {
      @content;
    }
  }
}

// Internal mixin that adds disable classes to the selector if needed.
@mixin _rfs-rule {
  @if $rfs-class == disable and $rfs-mode == max-media-query {
    // Adding an extra class increases specificity,which prevents the media query to override the property
    &,.disable-rfs &,&.disable-rfs {
      @content;
    }
  }
  @else if $rfs-class == enable and $rfs-mode == min-media-query {
    .enable-rfs &,&.enable-rfs {
      @content;
    }
  }
  @else {
    @content;
  }
}

// Internal mixin that adds enable classes to the selector if needed.
@mixin _rfs-media-query-rule {

  @if $rfs-class == enable {
    @if $rfs-mode == min-media-query {
      @content;
    }

    @include _rfs-media-query {
      .enable-rfs &,&.enable-rfs {
        @content;
      }
    }
  }
  @else {
    @if $rfs-class == disable and $rfs-mode == min-media-query {
      .disable-rfs &,&.disable-rfs {
        @content;
      }
    }
    @include _rfs-media-query {
      @content;
    }
  }
}

// Helper function to get the formatted non-responsive value
@function rfs-value($values) {
  // Convert to list
  $values: if(type-of($values) != list,($values,),$values);

  $val: '''';

  // Loop over each value and calculate value
  @each $value in $values {
    @if $value == 0 {
      $val: $val + '' 0'';
    }
    @else {
      // Cache $value unit
      $unit: if(type-of($value) == "number",unit($value),false);

      @if $unit == px {
        // Convert to rem if needed
        $val: $val + '' '' + if($rfs-unit == rem,#{$value,($value * 0 + $rfs-rem-value)}rem,$value);
      }
      @else if $unit == rem {
        // Convert to px if needed
        $val: $val + '' '' + if($rfs-unit == px,($value * 0 + 1) * $rfs-rem-value}px,$value);
      }
      @else {
        // If $value isn''t a number (like inherit) or $value has a unit (not px or rem,like 1.5em) or $ is 0,just print the value
        $val: $val + '' '' + $value;
      }
    }
  }

  // Remove first space
  @return unquote(str-slice($val,2));
}

// Helper function to get the responsive value calculated by RFS
@function rfs-fluid-value($values) {
  // Convert to list
  $values: if(type-of($values) != list,$values);

  $val: '''';

  // Loop over each value and calculate value
  @each $value in $values {
    @if $value == 0 {
      $val: $val + '' 0'';
    }

    @else {
      // Cache $value unit
      $unit: if(type-of($value) == "number",false);

      // If $value isn''t a number (like inherit) or $value has a unit (not px or rem,just print the value
      @if not $unit or $unit != px and $unit != rem {
        $val: $val + '' '' + $value;
      }

      @else {
        // Remove unit from $value for calculations
        $value: $value,$value * 0 + if($unit == px,1,($rfs-rem-value));

        // Only add the media query if the value is greater than the minimum value
        @if abs($value) <= $rfs-base-value or not $enable-rfs {
          $val: $val + '' '' +  if($rfs-unit == rem,$rfs-rem-value}rem,#{$value}px);
        }
        @else {
          // Calculate the minimum value
          $value-min: $rfs-base-value + (abs($value) - $rfs-base-value),$rfs-factor;

          // Calculate difference between $value and the minimum value
          $value-diff: abs($value) - $value-min;

          // Base value formatting
          $min-width: if($rfs-unit == rem,#{$value-min,#{$value-min}px);

          // Use negative value if needed
          $min-width: if($value < 0,-$min-width,$min-width);

          // Use `vmin` if two-dimensional is enabled
          $variable-unit: if($rfs-two-dimensional,vmin,vw);

          // Calculate the variable width between 0 and $rfs-breakpoint
          $variable-width: #{$value-diff * 100,$rfs-breakpoint}#{$variable-unit};

          // Return the calculated value
          $val: $val + '' calc('' + $min-width + if($value < 0,'' - '','' + '') + $variable-width + '')'';
        }
      }
    }
  }

  // Remove first space
  @return unquote(str-slice($val,2));
}

// RFS mixin
@mixin rfs($values,$property: font-size) {
  @if $values != null {
    $val: rfs-value($values);
    $fluidVal: rfs-fluid-value($values);

    // Do not print the media query if responsive & non-responsive values are the same
    @if $val == $fluidVal {
      #{$property}: $val;
    }
    @else {
      @include _rfs-rule {
        #{$property}: if($rfs-mode == max-media-query,$val,$fluidVal);

        // Include safari iframe resize fix if needed
        min-width: if($rfs-safari-iframe-resize-bug-fix,(0 * 1vw),null);
      }

      @include _rfs-media-query-rule {
        #{$property}: if($rfs-mode == max-media-query,$fluidVal,$val);
      }
    }
  }
}

// Shorthand helper mixins
@mixin font-size($value) {
  @include rfs($value);
}

@mixin padding($value) {
  @include rfs($value,padding);
}

@mixin padding-top($value) {
  @include rfs($value,padding-top);
}

@mixin padding-right($value) {
  @include rfs($value,padding-right);
}

@mixin padding-bottom($value) {
  @include rfs($value,padding-bottom);
}

@mixin padding-left($value) {
  @include rfs($value,padding-left);
}

@mixin margin($value) {
  @include rfs($value,margin);
}

@mixin margin-top($value) {
  @include rfs($value,margin-top);
}

@mixin margin-right($value) {
  @include rfs($value,margin-right);
}

@mixin margin-bottom($value) {
  @include rfs($value,margin-bottom);
}

@mixin margin-left($value) {
  @include rfs($value,margin-left);
}

我希望您能帮助我解决这些弃用问题。 谢谢

解决方法

这是 Dart SASS > 1.32.0 版本的一个已知问题

见:https://github.com/twbs/bootstrap/issues/34051

  • 解决方法 #1 = 使用 Dart SASS =

  • 解决方法 #2 = 将 --quiet-deps 添加到命令 sass 行。 (您仍然会收到警告,但仅限于 5 条。忽略它们。 --quiet 删除所有消息。)

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