vue在线动态切换主题色方案

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

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