vue i18n implementation language switch

1. vue-i18n implementation language switching vue-i18n be installed, using the language selected by the user's cookie, cookie to install

npm install vue-i18n
npm install js-cookie

 

2. Create lang file, then the new folder lang.js, package setlang () and getLang () method, the user selects a language used to access the cookie

export default {
  setLang (lang) {
    window.localStorage.setItem('user_lang', lang)
  },
  getLang (defaultLang) {
    let localLang = window.localStorage.getItem('user_lang')

    if (localLang === null) {
      return defaultLang
    } else {
      return localLang
    }
  }
}

3. Add New zh.js and en.js language pack lang file

module.exports = {
  layout: {
    home: '首页',
    scan: '扫一扫',
    person: '个人'
  }
}

module.exports = {
  layout: {
    home: 'home',
    scan: 'scan',
    person: 'person'
  }
}

4. vue-i18n incorporated in and lang.js main.js

import VueI18n from 'vue-i18n'
import LangStorage from './lang/lang'

Vue.use(VueI18n)

const i18n = new VueI18n({
  locale: LangStorage.getLang('zh'),//调用lang.js的getLang()方法获取语言
  // locale: 'zh',
  messages: {
    'zh': require('./lang/zh'),//引入语言包
    'en': require('./lang/en'),//引入语言包
 
  }
})

new Vue({
  el: '#app',
  i18n,//使用i18n
  components: { App },
  template: '<App/>'
})

5. Use the page

<mt-header :title="$t('layout.home')" >
       <span>{{$t('layout.home')}}</span>
        <select slot="left"   v-model='lang' class="lang">//语言切换
          <option value="zh">中文</option>
          <option value="en" >English</option>
          
        </select>
  </mt-header>
<!--在js使用-->
<script>
    alert(this.$t('layout.home'))
</script>

6.wacth monitor language switching method

watch: {
    lang (val, olfval) {
      this.$i18n.locale = val//切换语言
      LangStorage.setLang(this.$i18n.locale)//把语言存到cookie
     
    }
  },

7. Reference: https://www.jianshu.com/p/b022535713c3 , https://www.cnblogs.com/listen9436/p/10525532.html