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@lucky-joel/css-utils

v1.0.0

Published

CSS utility classes for commonly used basic styles

Downloads

1

Readme

CSS utils

npm npm Open Source Love

常用 CSS 工具类。快速做页面,少写重复代码,减少起类命的痛苦。

安装

npm install @lucky-joel/css-utils --save

或用 CDN

<link rel="stylesheet" href="https://unpkg.com/@lucky-joel/css-utils" />

使用

普通项目

<link rel="stylesheet" href="path-to/node_modules/css-utils-collection/dist/min/index.css" />

未压缩版

<link rel="stylesheet" href="path-to/node_modules/css-utils-collection/dist/index.css" />

webpack 项目

<style src="css-utils-collection"></style>

注意,需要安装了 style-loader。

Demo

说明

<div class="list">
  <div class="media">
      <img src="http://via.placeholder.com/50x50" class="media__img" />
      <div class="media__body">
        <div class="media__line">
          <div class="media__title">标题</div>
          <div class="media__time">2017/12/10</div>
        </div>
        <div class="media__summary">摘要</div>
      </div>
    </div>

    <div class="media">
      <img src="http://via.placeholder.com/50x50" class="media__img" />
      <div class="media__body">
        <div class="media__line">
          <div class="media__title">标题</div>
          <div class="media__time">2017/12/10</div>
        </div>
        <div class="media__summary">摘要很长很长摘要很长很长摘要很长很长摘要很长很长摘要很长很长摘要很长很长摘要很长很长摘要很长很长</div>
      </div>
    </div>
</div>

用工具类名的方式,这么写:

<div>
  <div class="ly bb p-10">
      <img src="http://via.placeholder.com/50x50" class="br-sm mr-10" />
      <div class="lyi-fill">
        <div class="mb-10 ly ly-justify">
          <div class="fz-lg">标题</div>
          <div class="fz-sm c-grey">2017/12/10</div>
        </div>
        <div class="t-ddd">摘要</div>
      </div>
    </div>

    <div class="ly bb p-10">
      <img src="http://via.placeholder.com/50x50" class="br-sm mr-10" />
      <div class="lyi-fill">
        <div class="mb-10 ly ly-justify">
          <div class="fz-lg">标题</div>
          <div class="fz-sm c-grey">2017/12/10</div>
        </div>
        <div class="t-ddd">摘要很长很长摘要很长很长摘要很长很长摘要很长很长摘要很长很长摘要很长很长摘要很长很长摘要很长很长</div>
      </div>
    </div>
</div>

这样写的优点:

  • 减少起类名的次数。从而提高做页面的速度。
  • 写好类名后,样式基本已满足要求了。减少总的 CSS 代码量。

缺点:

  • 一个元素可能会用很多个类名,代码上有点丑。

注意:这种写法适用写不可复用的页面。写组件,还是用给元素加类名的方式比较好。

支持的工具类

  • position,z-index,top,bottom,left,right。工具类:
    • pos-r
  • margin。工具类:
    • m[t|b|l|r|v|h]-<0|5|10|15|20>[rem]
  • 盒模型。工具类:
    • border-box, content-box
  • border。工具类:
    • b[t|b|l|r|v|h]
  • border-radius 圆角
    • br-<lg|md|sm|round>
  • cursor 鼠标
    • cursor-p 手形
    • cursor-na 禁用
  • padding。工具类:
    • p[t|b|l|r|v|h]-<0|5|10|15|20>[rem]
  • background。工具类:
    • bgc-grey
    • bgz-<cover|contain|100per>
  • display。 flex,block...
    • ly
    • d-<b|ib|n>
    • v-h: visibility: hidden
  • height。工具类:
    • h-100per: height: 100%
  • flex-direction
    • lyd-c: 对应 flex-direction: column
  • flex-wrap
    • ly-multi 多行
  • align-items, align-self 垂直对齐
    • ly-<t|m|b>
  • line-height
    • lh-<lg|md|sm>
  • width
    • w-50,w-100 : 对应 width: 50%,width: 100%
  • flex-grow
    • lyi-fill
  • justify-content 水平对齐
    • ly-<j|c|a|r>
  • text-align 文本水平对齐
    • ta-<c|r>
  • text
    • t-ddd :单行文本超出加省略号。
    • t-ly-j :文字两端对齐。
    • t-no-select:禁止选择文本。
    • tt-u:字母大写。
  • font
    • fz-<xl|20|lg|18|md|16|sm|14|xs|12> xl,lg,md,sm,xs 分别对应 20px, 18px, 16px, 14px, 12px。
    • fw-<b|l>
    • ff-<yahei|hei|song>
    • c-<i|white|black|000|333|666|999|grey|light-grey|primary>c-i -> color: inherit
  • 复合规则
    • ly-abs-c: 宽度不固定的绝对定位元素水平居中
    • ly-abs-m: 高度不固定的绝对定位元素垂直居中
    • placeholder 来做组件占位。
    • img-rwd 响应式图片
  • 兼容性的
    • smooth-scroll 解决 当内容很多时,ios 的滚动比较生涩 的问题。
  • 其他:这些需要引用额外的css。在 dist/more
    • triangle-<t|r|b|l> 实心三角。

更多见源码

约定

  • 类名规则是样式单词的首字母缩写-值。如
    • mb-10 -> margin-bottom: 10px
    • ta-c -> text-align: center
    • 特例
      • ly 布局相关相关的。
      • pos -> position, border-box, content-box。
  • xl, lg, md, sm, xm 分别代表 特大,大,中等,小,特小。
  • t,r,b,l,v,h 分别表示上,右,下,左,垂直,水平。
  • 默认数值的单位是px,如 mb-10 -> margin-bottom: 10px。 百分比的单位是 per: 如,w-100per -> width: 100%;。rem 的单位是rem:如 pr-10rem
  • 颜色深浅,分别用 dark,light。如
    • c-light-grey
  • 类名的值采用 BNF(巴科斯范式)。常见符号的意义,如下
    • <>: 必选项。
    • [] : 可选项。
    • {}: 内包含的为可重复0至无数次的项。
    • |: 分隔不同选项。
  • 要增加优先级,可以在类名后面加-i。该样式会加被加上 !important。 如 ta-c-i