vue3+elementplus动态主题切换_element-plus多主题切换

1.下载element-plus

# Yarn
$ yarn add element-plus

2.在main.js中引入

import { createApp } from 'vue'
import App from './App.vue'
import ElementPlus from 'element-plus'
import zhCn from 'element-plus/dist/locale/zh-cn.mjs'
const app = createApp(App)
app.use(ElementPlus, {
    locale: zhCn,
  })
app.mount('#app')
 
​

3.在src文件夹下新建style文件夹，并新建文件fix.scss,style.scss

下载yarn add -D sass  

新增fix.scss

在此文件可以自定义基础颜色

/* 覆盖element-plus样式 */
 
:root {
	--el-color-primary: #409EFF;
	--el-color-primary-light-1: #53a7ff;
	--el-color-primary-light-2: #66b1ff;
	--el-color-primary-light-3: #79bbff;
	--el-color-primary-light-4: #8cc4ff;
	--el-color-primary-light-5: #9fceff;
	--el-color-primary-light-6: #b2d8ff;
	--el-color-primary-light-7: #c5e1ff;
	--el-color-primary-light-8: #d8ebff;
	--el-color-primary-light-9: #ebf5ff;
	--el-color-primary-dark-1: #398ee5;
	--el-color-primary-dark-2: #337ecc;
	--el-color-primary-dark-3: #2c6eb2;
	--el-color-primary-dark-4: #265e99;
	--el-color-primary-dark-5: #204f7f;
	--el-color-primary-dark-6: #193f66;
	--el-color-primary-dark-7: #132f4c;
	--el-color-primary-dark-8: #0c1f32;
	--el-color-primary-dark-9: #060f19;
}
 

 新建style.scss

@import 'fix.scss';

4.配置vite.config.js

下载yarn add -D unplugin-auto-import unplugin-vue-components 5

import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'
import path from 'path'
import { ElementPlusResolver } from 'unplugin-vue-components/resolvers'
import Components from 'unplugin-vue-components/vite'
import AutoImport from 'unplugin-auto-import/vite'
const pathSrc = path.resolve(__dirname, 'src')
// https://vitejs.dev/config/
export default defineConfig({
  plugins: [
    vue(),
    AutoImport({ resolvers: [ElementPlusResolver()] }),
    //Components({ resolvers: [ElementPlusResolver()] }),
    // { importStyle: "sass" }配置ElementPlus采用sass样式配色系统
    Components({ resolvers: [ElementPlusResolver({ importStyle: "sass" })] }),
  ],
 
  resolve: {
    alias: {
      '~/': `${pathSrc}/`,
    },
  },
  css: {
    preprocessorOptions: {
      scss: {
        additionalData: `@use "~/style/style.scss" as *;`,
      },
    },
  },
})

5.在页面查看效果 

在测试页面写入

 
<template>
  <div>
    <el-button type="primary">Primary</el-button>
    <div class="demo-color-block">
      <span class="demonstration">切换主题</span>
      <el-color-picker v-model="color1"  :predefine="colorList" @change="changeColor"/>
    </div>
  </div>
</template>
 
<script setup>
import { watch, onMounted, ref } from 'vue'
import colorTool from '~/utils/color'
const color1 = ref('#409EFF')
const colorList=ref(['#409EFF', '#009688', '#536dfe', '#ff5c93', '#c62f2f', '#fd726d'])
 
 
const changeColor=(val)=>{
  console.log(val,'val');
  document.documentElement.style.setProperty('--el-color-primary', val);
  for (let i = 1; i <= 9; i++) {
					document.documentElement.style.setProperty(`--el-color-primary-light-${i}`, colorTool.lighten(val,i/10));
	}
  for (let i = 1; i <= 9; i++) {
    document.documentElement.style.setProperty(`--el-color-primary-dark-${i}`, colorTool.darken(val,i/10));
  }
}
</script>
<style scoped>
 
</style>

页面展示