带有vuex的暗模式，并保存在本地存储中

// theme.js

const state = {
  currentTheme: 'light' // 默认为明亮主题
}

const mutations = {
  SET_THEME(state, theme) {
    state.currentTheme = theme
  }
}

const actions = {
  setTheme({ commit }, theme) {
    commit('SET_THEME', theme)
  }
}

export default {
  namespaced: true,
  state,
  mutations,
  actions
}

<template>
  <button @click="toggleTheme">切换主题</button>
</template>

<script>
import { mapActions } from 'vuex'

export default {
  methods: {
    ...mapActions('theme', ['setTheme']),
    toggleTheme() {
      const newTheme = this.$store.state.theme.currentTheme === 'light' ? 'dark' : 'light'
      this.setTheme(newTheme)
      localStorage.setItem('theme', newTheme) // 将主题模式保存在本地存储中
    }
  }
}
</script>

<template>
  <div :class="{ 'dark-mode': currentTheme === 'dark' }">
    <!-- 应用程序内容 -->
  </div>
</template>

<script>
import { mapState } from 'vuex'

export default {
  computed: {
    ...mapState('theme', ['currentTheme'])
  }
}
</script>

<style>
.dark-mode {
  /* 黑暗模式下的样式 */
}
</style>