vue elementui 切换语言

1.安装插件:npm install vue-i18n  --save

2.src下新建i18n文件夹,

　　i18n文件夹下创建langs文件夹和i18n.js文件

　　langs文件夹下创建cn.js; en.js; index.js

如图:

3.  i18n.js:

import Vue from "vue";
import locale from 'element-ui/lib/locale'
import VueI18n from "vue-i18n";
import messages from "./langs";

Vue.use(VueI18n);
const i18n = new VueI18n({
  locale: localStorage.lang || "cn",
  messages
});
locale.i18n((key, value) => i18n.t(key, value))

export default i18n;

4. cn.js:

import zhLocale from "element-ui/lib/locale/lang/zh-CN";
const cn = {
  message: {
    login: "登录",
    password: "密码不可为空",
    upassword: "密码",
    uname: "账户",
  },
  ...zhLocale
};

export default cn;

5. en.js:

import enLocale from 'element-ui/lib/locale/lang/en'
const en = {
  message: {
    login: "Login",
    password: "Password is required",
    upassword: "password",
    uname: "account"
  },
  ...enLocale
};

export default en;

6.index.js:

import en from "./en";
import cn from "./cn";
export default {
  en,
  cn
};

7. main.js:

import Vue from 'vue'
import App from './App'
import store from './store'
import i18n from './i18n/i18n'
Vue.config.productionTip = false

window.app = new Vue({
  store,
  i18n,
  render: h => h(App)
}).$mount('#app')

以上就是配置好了,可以使用了

8. 使用:

//data()中声明
data() {
    return {
      lang: "",
    };
  },

//作为文本内容,绑定在标签中
<div class="manage_tip">
    <span class="title">{{$t('message.login')}}</span>
 </div>

//作为属性绑定
  <el-form-item :label="$t('message.uname')" prop="pnone">
        <el-input v-model="loginUser.pnone" placeholder="请输入手机或邮箱"></el-input>
 </el-form-item>

//作为elementui 中的校验规则,要放在computed中
 computed: {
    rules() {
      return {
        password: [
          {
            required: true,
            message: this.$t("message.password"),
            trigger: "blur"
          },
          {
            pattern: /^(?=.*\d)(?=.*[a-zA-Z])(?=.*[\W_]).{6,16}$/,
            message: "输入6-16位包含数字、字母、特殊字符的密码",
            trigger: "blur"
          }
        ],
      };
    }
  },

//切换中英文
<el-dropdown @command="handleCommand">
  <span class="el-dropdown-link">
            中英文切换
     <i class="el-icon-arrow-down el-icon--right"></i>
  </span>
  <el-dropdown-menu slot="dropdown">
       <el-dropdown-item command="cn">中文</el-dropdown-item>
        <el-dropdown-item command="en">英文</el-dropdown-item>
   </el-dropdown-menu>
</el-dropdown>

//切换语言的事件
 methods: {
    // 根据下拉框的中被选中的值切换语言
    handleCommand(command) {
      // this.$message("click on item " + command);
      switch (command) {
        case "cn": {
          this.lang = "cn";
          this.$i18n.locale = this.lang;
          break;
        }
        case "en": {
          this.lang = "en";
          this.$i18n.locale = this.lang;
          break;
        }

        default:
          break;
      }
    },
}