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主要原理是利用webpack插件webpack-theme-color-replacer提取相关颜色css然后根据配置动态生成替换的css
具体实现步骤如下:
1.添加webpack插件,新建文件webpack/themePlugin.js
const ThemeColorReplacer = require('webpack-theme-color-replacer') const forElementUI = require('webpack-theme-color-replacer/forElementUI') const config = require('../src/config/appConfig') module.exports = new ThemeColorReplacer({ fileName: 'css/theme-colors.[contenthash:8].css', matchColors: [ ...forElementUI.getElementUISeries(config.themeColor), //element-ui主色系列 // '#0cdd3a', //自定义颜色 ], changeSelector: forElementUI.changeSelector, isJsUgly: process.env.NODE_ENV !== 'development', // injectCss: false, // resolveCss(resultCss) { // optional. Resolve result css code as you wish. // return resultCss + youCssCode // } })
matchColors数组中可配置多个自定义要替换的主题色
2.在vue.config.js中添加这个插件
const themePlugin=require('./webpack/themePlugin'); module.exports = { configureWebpack: { plugins: [ themePlugin ] } }
3.新建文件themeColorClient.js
import client from 'webpack-theme-color-replacer/client' import forElementUI from 'webpack-theme-color-replacer/forElementUI' import appConfig from '@/config/appConfig' export let curColor = appConfig.themeColor // 动态切换主题色 export function changeThemeColor(newColor) { var options = { newColors: [...forElementUI.getElementUISeries(newColor)], } return client.changer.changeColor(options, Promise) .then(() => { curColor = newColor localStorage.setItem('theme_color', curColor) }); } export function initThemeColor() { const savedColor = localStorage.getItem('theme_color') if (savedColor) { curColor = savedColor changeThemeColor(savedColor) } }
4.在需要的时候调用 initThemeColor初始化颜色 changeThemeColor改变主题颜色
import { initThemeColor,changeThemeColor } from './utils/themeColorClient' initThemeColor() changeThemeColor('#F56C6C')//传入颜色格式应该为十六进制颜色值,'red'类似颜色暂不支持
具体细节请参考https://github.com/hzsrc/vue-element-ui-scaffold-webpack4
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