基于Vue3+element-plus实现中英文切换功能

npm install vue-i18n@next element-plus --save

 
// npm
npm install vue-i18n@9
 
// yarn
yarn add vue-i18n@9

export default {
  message: {
    hello: 'Hello, world!'
  },
  button: {
    submit: 'Submit'
  },
  // 其他翻译
};

export default {
  message: {
    hello: '你好，世界！'
  },
  button: {
    submit: '提交'
  },
  // 其他翻译
};

import { createApp } from 'vue';
import App from './App.vue';
import { createI18n } from 'vue-i18n';
import en from './locales/en';
import zh from './locales/zh';
import ElementPlus from 'element-plus';
import 'element-plus/dist/index.css';
 
const messages = {
  en: en,
  zh: zh
};
 
const i18n = createI18n({
  locale: 'zh', // 默认语言
  messages,
});
 
const app = createApp(App);
 
app.use(i18n);
app.use(ElementPlus);
 
app.mount('#app');

<template>
  <div>
    <h1>{{ $t('message.hello') }}</h1>
    <el-button>{{ $t('button.submit') }}</el-button>
    <el-select v-model="currentLocale" @change="changeLocale">
      <el-option label="English" value="en"></el-option>
      <el-option label="中文" value="zh"></el-option>
    </el-select>
  </div>
</template>
 
<script>
export default {
  data() {
    return {
      currentLocale: this.$i18n.locale,
    };
  },
  methods: {
    changeLocale() {
      this.$i18n.locale = this.currentLocale;
    }
  }
};
</script>

import { createApp } from 'vue';
import App from './App.vue';
import { createI18n } from 'vue-i18n';
import en from './locales/en';
import zh from './locales/zh';
import ElementPlus from 'element-plus';
import 'element-plus/dist/index.css';
import zhCn from 'element-plus/lib/locale/lang/zh-cn';
import enUs from 'element-plus/lib/locale/lang/en';
 
const messages = {
  en: {
    ...en,
    ...enUs
  },
  zh: {
    ...zh,
    ...zhCn
  }
};
 
const i18n = createI18n({
  locale: 'zh', // 默认语言
  messages,
});
 
const app = createApp(App);
 
app.use(i18n);
app.use(ElementPlus, {
  locale: i18n.global.locale === 'zh' ? zhCn : enUs,
});
 
app.mount('#app');

npm run serve