同时实现UI组件库(这里以ElementPlus为例)和内容文字的中英文切换

1. 安装vueI18n和element-plus

pnpm i vue-i18n  element-plus

2. 然后在项目中src目录下新建lang文件夹，里面新建en.ts和zh.ts还有index.ts

index.ts

import { createI18n } from 'vue-i18n'
import en from './en'
import zh from './zh'
import type { App } from 'vue'

const messages = { en, zh }

const localeData = {
  globalInjection: true, // 如果设置true, $t() 函数将注册到全局
  legacy: false, // 如果想在composition api中使用需要设置为false
  locale: localStorage.getItem('lang') || 'zh', // 当前选择的语言
  messages, // set locale messages
}

export const i18n = createI18n(localeData)

export const setupI18n = {
  install(app: App) {
    app.use(i18n)
  },
}

en.ts

export default {
  router: {
    Dashboard: 'homePage',
  },
}

zh.ts

export default {
  router: {
    Dashboard: '首页',
  },
}

3. 在mian.ts中进行注册使用

// ElementPlus

import ElementPlus from 'element-plus'

import 'element-plus/dist/index.css'

// vuei18n

import { setupI18n } from '@/lang'

const app = createApp(App)

app.use(ElementPlus)

app.use(setupI18n)

4. 在pinia中新增处理语言的逻辑

config.ts

import { defineStore } from 'pinia'
import { i18n } from '@/lang'
import { ref } from 'vue'

export const useConfigStore = defineStore('config', () => {
  // 当前语言
  let language = ref(localStorage.getItem('lang') || 'zh')

  // 设置语言
  const setLanguage = (lang: string) => {
    const { locale }: any = i18n.global
    language.value = lang
    locale.value = lang
  }

  return {
    language,
    setLanguage,
  }
})

index.ts

import { useConfigStore } from './config'

export { useConfigStore }

5. 修改App.vue文件

<template>
  <el-config-provider :locale="lang[language]">
    <RouterView />
  </el-config-provider>
</template>

<script setup lang="ts">
import { computed } from 'vue'
import { ElConfigProvider } from 'element-plus'
import { RouterView } from 'vue-router'
import { useConfigStore } from './stores'
import zh from 'element-plus/es/locale/lang/zh-cn'
import en from 'element-plus/es/locale/lang/en'

const configStore = useConfigStore()

const language = computed(() => configStore.language)

const lang: any = { zh, en }
</script>

此时就完成了中英文切换的功能，我们进行测试一下

• 点击按钮，传入相应的语言即可。

<template>
  <el-button @click="changeLanguage('zh')">中文</el-button>
  <el-button @click="changeLanguage('en')">英文</el-button>
  <el-pagination
    v-model:current-page="currentPage4"
    v-model:page-size="pageSize4"
    :page-sizes="[100, 200, 300, 400]"
    :small="small"
    :disabled="disabled"
    :background="background"
    layout="total, sizes, prev, pager, next, jumper"
    :total="400"
  />
  {{ $t('router.Dashboard') }}
</template>

<script lang="ts" setup>
import { ref } from 'vue'
import { useConfigStore } from '@/stores'

const configStore = useConfigStore()

const currentPage4 = ref(4)
const pageSize4 = ref(100)
const small = ref(false)
const background = ref(false)
const disabled = ref(false)

const changeLanguage = (language: 'zh' | 'en') => {
  configStore.setLanguage(language)
}
</script>

测试结果：