文章归档：https://www.yuque.com/u27599042/coding_star/vzkgy6gvcnpl3u2y

效果示例

配置 src 目录别名 @

https://www.yuque.com/u27599042/coding_star/ogu2bhefy1fvahfv

配置 Tailwind CSS

https://www.yuque.com/u27599042/coding_star/yqzi9olphko9ity1

配置 Tailwind CSS 使用暗黑模式的形式

tailwind.config.js

/** @type {import('tailwindcss').Config} */
export default {
  // 配置 Tailwind CSS 使用暗黑模式的形式(类名 class="dark")
  darkMode: 'class',
  // ...
}

配置 NutUI

https://www.yuque.com/u27599042/coding_star/gumgmgfgi2gzkgpl

ToggleTheme.js

src/components/toolbar/js/ToggleTheme.js

import {computed, ref} from 'vue'

// ***************
// * 是否为暗色主题 *
// ***************
const isDark = ref(false)

// **********
// * 主题图标 *
// **********
const lightIcon = 'icon-sunbaitian-taiyang'
const darkIcon = 'icon-yueliangxingxing'
export const themeIcon = computed(() =>  isDark.value ? lightIcon : darkIcon)

// **********
// * 主题类名 *
// **********
const lightClass = 'light'
const darkClass = 'dark'
export const themeClass = computed(() =>  isDark.value ? darkClass : lightClass)

// **********
// * 切换主题 *
// **********
export const toggleTheme = () => {
    const htmlClassList = document.documentElement.classList
    if (isDark.value) {
        isDark.value = !isDark.value
        htmlClassList.remove(darkClass)
        htmlClassList.add(lightClass)
        return
    }
    isDark.value = !isDark.value
    htmlClassList.remove(lightClass)
    htmlClassList.add(darkClass)
}

Toolbar 组件

src/components/toolbar/Toolbar.vue

<script setup>
import {ref} from 'vue'
import {RectLeft} from '@nutui/icons-vue'
import {themeIcon, toggleTheme} from "@/components/toolbar/js/ToggleTheme.js";

// ************
// * 工具栏状态 *
// ************
const toolbarActive = ref(false)

// *****************
// * 切换主题处理函数 *
// *****************
function toggleThemeHandler() {
  toggleTheme()
  toolbarActive.value = false
}
</script>

<template>
  <!-- 可拖拽 -->
  <nut-drag direction="y" :style="{ right: '0px', bottom: '100px' }">
    <!-- 工具栏 -->
    <nut-fixed-nav class="toolbar" v-model:visible="toolbarActive">
      <!-- 工具栏按钮 -->
      <template #btn>
        <RectLeft color="#fff"/>
        <span class="iconfont icon-gongjuxiang3 ml-2 text-xl text-gray-100"></span>
      </template>
      <!-- 工具栏列表 -->
      <template #list>
        <ul class="nut-fixed-nav__list">
          <li class="nut-fixed-nav__list-item">
            <!-- 切换主题 -->
            <!-- flex-center 为自定义类，不为 tailwind css 中的 -->
            <div class="toggle-theme w-full h-full flex-center" @click="toggleThemeHandler">
              <span class="iconfont" :class="themeIcon"></span>
            </div>
          </li>
        </ul>
      </template>
    </nut-fixed-nav>
  </nut-drag>
</template>

<style scoped lang="scss">
.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}
</style>

App.vue

src/App.vue

<script setup>
import Toolbar from "@/components/toolbar/Toolbar.vue";
import {themeClass} from "@/components/toolbar/js/ToggleTheme.js";
</script>

<template>
  <!-- dark: 指定 tailwind css 暗色主题样式 -->
  <div class="app w-screen h-screen bg-gray-100 dark:bg-neutral-800">
    <!-- 使用 nut-config-provider 配置组件包裹 nut ui 组件，实现 nut ui 主题切换 -->
    <nut-config-provider :theme="themeClass">
      <!-- nut-cell 直接顶部接着父元素有 margin 塌陷问题 -->
      <div class="h-4"></div>
      <nut-cell title="我是标题" sub-title="副标题描述" desc="描述文字"></nut-cell>
    </nut-config-provider>
  </div>
  <!-- 工具栏 -->
  <Toolbar></Toolbar>
</template>

<style scoped>

</style>