CSS 预处理器是一种将预先定义的语法和功能添加到 CSS中的工具。它们允许开发人员使用变量、嵌套规则、混合、继承等功能,以更高效和可维护的方式编写样式表,其中常用的有sass/less/stylus,这里采用的sass方案
一、安装依赖
npm install sass -D
二、模块化管理
1、创建初始化样式文件
src目录下静态资源文件夹assets新建styles文件夹
2、配置项目基础通用样式
variables.module.scss集成通用样式
// base color
$blue: #324157;
$light-blue: #3A71A8;
$red: #C03639;
$pink: #E65D6E;
$green: #30B08F;
$tiffany: #4AB7BD;
$yellow: #FEC171;
$panGreen: #30B08F;
// 默认菜单主题风格
$base-menu-color: #bfcbd9;
$base-menu-color-active: #f4f4f5;
$base-menu-background: #304156;
$base-logo-title-color: #ffffff;
$base-menu-light-color: #606787;
$base-menu-light-background: #F2F6FB;
$base-logo-light-title-color: #fff;
$base-sub-menu-background: #1f2d3d;
$base-sub-menu-hover: #001528;
// 自定义暗色菜单风格
/**
$base-menu-color:hsla(0,0%,100%,.65);
$base-menu-color-active:#fff;
$base-menu-background:#001529;
$base-logo-title-color: #ffffff;
$base-menu-light-color:rgba(0,0,0,.70);
$base-menu-light-background:#ffffff;
$base-logo-light-title-color: #001529;
$base-sub-menu-background:#000c17;
$base-sub-menu-hover:#001528;
*/
$--color-primary: #4F6EF7;
$--color-success: #67C23A;
$--color-warning: #E6A23C;
$--color-danger: #F56C6C;
$--color-info: #909399;
$base-sidebar-width: 180px;
$base-navbar-height:60px;
// the :export directive is the magic sauce for webpack
// https://www.bluematador.com/blog/how-to-share-variables-between-js-and-sass
:export {
menuColor: $base-menu-color;
menuLightColor: $base-menu-light-color;
menuColorActive: $base-menu-color-active;
menuBackground: $base-menu-background;
menuLightBackground: $base-menu-light-background;
subMenuBackground: $base-sub-menu-background;
subMenuHover: $base-sub-menu-hover;
sideBarWidth: $base-sidebar-width;
navBarHeight: $base-navbar-height;
logoTitleColor: $base-logo-title-color;
logoLightTitleColor: $base-logo-light-title-color;
primaryColor: $--color-primary;
successColor: $--color-success;
dangerColor: $--color-danger;
infoColor: $--color-info;
warningColor: $--color-warning;
}
3、混合模式应用
mixin.scss集成混合样式
@mixin colorBtn($color) {
background: $color;
&:hover {
color: $color;
&:before,
&:after {
background: $color;
}
}
}
.blue-btn {
@include colorBtn($blue)
}
.light-blue-btn {
@include colorBtn($light-blue)
}
.red-btn {
@include colorBtn($red)
}
.pink-btn {
@include colorBtn($pink)
}
.green-btn {
@include colorBtn($green)
}
.tiffany-btn {
@include colorBtn($tiffany)
}
.yellow-btn {
@include colorBtn($yellow)
}
@mixin clearfix {
&:after {
content: "";
display: table;
clear: both;
}
}
@mixin scrollBar {
&::-webkit-scrollbar-track-piece {
background: #d3dce6;
}
&::-webkit-scrollbar {
width: 6px;
}
&::-webkit-scrollbar-thumb {
background: #99a9bf;
border-radius: 20px;
}
}
@mixin relative {
position: relative;
width: 100%;
height: 100%;
}
@mixin pct($pct) {
width: #{$pct};
position: relative;
margin: 0 auto;
}
@mixin triangle($width, $height, $color, $direction) {
$width: $width/2;
$color-border-style: $height solid $color;
$transparent-border-style: $width solid transparent;
height: 0;
width: 0;
@if $direction==up {
border-bottom: $color-border-style;
border-left: $transparent-border-style;
border-right: $transparent-border-style;
}
@else if $direction==right {
border-left: $color-border-style;
border-top: $transparent-border-style;
border-bottom: $transparent-border-style;
}
@else if $direction==down {
border-top: $color-border-style;
border-left: $transparent-border-style;
border-right: $transparent-border-style;
}
@else if $direction==left {
border-right: $color-border-style;
border-top: $transparent-border-style;
border-bottom: $transparent-border-style;
}
}
4、页面基本应用
import variables from '@/assets/styles/variables.module.scss'
在页面template内联直接应用
<el-menu
:default-active="activeMenu"
:collapse="isCollapse"
:background-color="sideTheme === 'theme-dark' ? variables.menuBackground : variables.menuLightBackground"
:text-color="sideTheme === 'theme-dark' ? variables.menuColor : variables.menuLightColor"
:unique-opened="true"
:active-text-color="theme"
:collapse-transition="false"
mode="vertical"
>
在style中应用
<style scoped lang="scss">
@import "@/assets/styles/mixin.scss";
@import "@/assets/styles/variables.module.scss";
.navbar {
height: $base-navbar-height;
overflow: hidden;
position: relative;
}
//混合使用@include
.app-wrapper {
@include clearfix;
}
//继承@extend
.button-basic {
border: none;
padding: 15px 30px;
text-align: center;
font-size: 16px;
cursor: pointer;
}
.button-report {
@extend .button-basic;
background-color: red;
}
</style>
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