vue3.2 之 i18n的使用

安装
- yarn add vue-i18n@next

1：i18n简单使用

src / i18n / index.ts

import { createI18n } from 'vue-i18n'
import EN from './en'
import ZH from './zh'

const messages = {
  en: {
    ...EN
  },
  zh: {
    ...ZH
  }
}

const getCurrentLanguage = () => {
  const UAlang = navigator.language // zh-CN
  const langCode = UAlang.indexOf('zh') !== -1 ? 'zh' : 'en'
  localStorage.setItem('lang', langCode)
  return langCode
}
const i18n = createI18n({
  legacy: false,
  globalInjection: true,
  locale: getCurrentLanguage() || 'zh',
  messages: messages
})

export default i18n

src / i18n / en.ts

export default {
  menus: {
    title: 'title',
    btn: 'btn'
  }
}

src / i18n / zh.ts

export default {
  menus: {
    title: '标题',
    btn: '按钮'
  }
}

main.ts

import i18n from '@/i18n/index.ts'

const app = createApp(App)
app.use(i18n)

使用

    <div>{{ $t('menus.title') }}</div>
    <el-button type="success">我是按钮 - {{$t('menus.btn')}}</el-button>

效果

在这里插入图片描述

2：i18n 语音的切换

components / lang / Lang.vue

<!-- -->
<template>
  <el-dropdown @command="changeLang">
    <span class="el-dropdown-link">
      语言切换
      <el-icon class="el-icon--right">
        <arrow-down />
      </el-icon>
    </span>
    <template #dropdown>
      <el-dropdown-menu>
        <el-dropdown-item :disabled="currentLang === 'zh'" command="zh"
          >中文</el-dropdown-item
        >
        <el-dropdown-item :disabled="currentLang === 'en'" command="en"
          >English</el-dropdown-item
        >
      </el-dropdown-menu>
    </template>
  </el-dropdown>
</template>

<script setup lang="ts" name="Lang">
import { ArrowDown } from '@element-plus/icons-vue'
import { computed } from 'vue'
import { useI18n } from 'vue-i18n'
const i18n = useI18n()
const currentLang = computed(() => {
  return i18n.locale.value
})
const changeLang = (val) => {
  i18n.locale.value = val
  localStorage.setItem('lang', val)
}
</script>
<style lang="scss" scoped></style>

使用 Lang组件

<template>
  <div>
    <div>{{ $t('menus.title') }}</div>
    <el-button type="success">我是按钮 - {{ $t('menus.btn') }}</el-button>
    <Lang></Lang>
  </div>
</template>
<script setup lang="ts" name="Home">
import Lang from '@/components/lang/Lang.vue'
</script>