关于 style-components

回顾React回顾React

style-components的基本使用

官方文档:https://www.styled-components.com/docs/basics

安装：npm install --save styled-components ||  yarn add styled-components

我的这个都是在一个组件中操作的，分页面创建style-components需要导出( export const 自定义名 = 准备创建style的名字 )在需要页面解构赋值引入

基础用法：

style-components最基础的用法就是以组件的形式编写样式

import styled from 'styled-components';

const HomeWrapper = styled.div `
   960px;
  margin: 0 auto;
  overflow: hidden;
`;
const HomeLeft = styled.div `
  float: left;
   625px;
  margin-left: 15px;
  padding-top: 30px;
  .bannder-img {
     625px;
    height: 270px;
  }
`;
const HomeRight = styled.div `
  float: right;
   280px;
  margin-left: 15px;
  padding-top: 30px;
`;

render () {
    return (
        <HomeWrapper>
            <HomeLeft>
                left
            </HomeLeft>
            <HomeRight>
                right
            </HomeRight>
        </HomeWrapper>
    )
}
上面的代码定义了三个组件，分别为HomeWrapper 、HomeLeft 、HomeRight，这样每一个组件对应唯一的样式，不在出现样式污染的情况。
如果在其他组件中使用，以解构赋值的方式引入需要的样式，然后当做标签使用与上方使用相同

定义全局样式

import { createGlobalStyle } from 'styled-components';

const GrobalStyle = createGlobalStyle `
  html, body, div, span, applet, object, iframe,
    h1, h2, h3, h4, h5, h6, p, blockquote, pre,
    a, abbr, acronym, address, big, cite, code,
    del, dfn, em, img, ins, kbd, q, s, samp,
    small, strike, strong, sub, sup, tt, var,
    b, u, i, center,
    dl, dt, dd, ol, ul, li,
    fieldset, form, label, legend,
    table, caption, tbody, tfoot, thead, tr, th, td,
    article, aside, canvas, details, embed, 
    figure, figcaption, footer, header, hgroup, 
    menu, nav, output, ruby, section, summary,
    time, mark, audio, video {
        margin: 0;
        padding: 0;
        border: 0;
        font-size: 100%;
        font: inherit;
        vertical-align: baseline;
    }
    /* HTML5 display-role reset for older browsers */
    article, aside, details, figcaption, figure, 
    footer, header, hgroup, menu, nav, section {
        display: block;
    }
    body {
        line-height: 1;
    }
    ol, ul {
        list-style: none;
    }
    blockquote, q {
        quotes: none;
    }
    blockquote:before, blockquote:after,
    q:before, q:after {
        content: '';
        content: none;
    }
    table {
        border-collapse: collapse;
        border-spacing: 0;
    }
    
    @font-face {
      font-family: 'iconfont';  /* project id 897264 */
      src: url('//at.alicdn.com/t/font_897264_7ma62sn10m3.eot');
      src: url('//at.alicdn.com/t/font_897264_7ma62sn10m3.eot?#iefix') format('embedded-opentype'),
      url('//at.alicdn.com/t/font_897264_7ma62sn10m3.woff') format('woff'),
      url('//at.alicdn.com/t/font_897264_7ma62sn10m3.ttf') format('truetype'),
      url('//at.alicdn.com/t/font_897264_7ma62sn10m3.svg#iconfont') format('svg');
    }
    .iconfont {
      font-family:"iconfont" !important;
      font-size:16px;
      font-style:normal;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }
    
    .clearfix:after {visibility: hidden;display: block;font-size: 0;content: ".";clear: both;height: 0;}
    .clearfix {zoom: 1;}
`;
上面的代码GrobalStyle是全局样式组件，只需在React组件的最外层引入即可。

引入图片

需要图片引入，如果像css一样的引入方式，会报错。正确的引入方式是import导入，再以变量的方式引入，如下：

import styled from 'styled-components';
import logPic from '../../statics/images/logo.png';

export const Logo = styled.div `
  position: absolute;
  top: 0;
  left: 0;
   100px;
  height: 56px;
  background-image: url(${logPic});  
  background-size: contain;
`;
上面的代码logPic是存放logo图片地址的变量，只需使用${logPic}的方式引入即可