Example of vue-i18n installation and configuration, and introduces the use in template text, component method, js, f method

Vue-i18n is an international component of a project that can switch between multiple language versions. Many Vue projects use this plugin to handle language switching.
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basic operation

1. Installation reference:

$ npm install vue-i18n

<script src="https://unpkg.com/vue/dist/vue.js"></script>
<script src="https://unpkg.com/vue-i18n/dist/vue-i18n.js"></script>

2. Introduce vue-i18n into main.js

import VueI18n from 'vue-i18n' 
 
Vue.use(VueI18n) // 通过插件的形式挂载 
 
const i18n = new VueI18n({
    
     
    locale: 'zh-CN',    // 语言标识 
    //this.$i18n.locale // 通过切换locale的值来实现语言切换 
    messages: {
    
     
      'zh-CN': require('./common/lang/zh'),   // 中文语言包 
      'en-US': require('./common/lang/en')    // 英文语言包 
    } 
}) 
 
/* eslint-disable no-new */ 
new Vue({
    
     
  el: '#app', 
  i18n,  // 记住要添加上
  store, 
  router, 
  template: '<App/>', 
  components: {
    
     App } 
})

3. Make a js file, process en and zh modes, and then switch this.$i18n.locale

en.js English language pack:

export const m = { music: 'Music',//Netease Cloud Music findMusic: 'FIND MUSIC',//find music myMusic: 'MY MUSIC',//my music friend: 'FRIEND',//friend musician: 'MUSICIAN',//Musician download: 'DOWNLOAD'//Download client }

zh.js Chinese language pack:

export const m = { music: 'Netease Cloud Music', findMusic: 'discover music', myMusic: 'my music', friend: 'friend', musician: 'musician', download: 'download client' }

4. Language switching method

How to switch in a click event in my component.

 changeLangEvent() {
    
    
   this.$confirm('确定切换语言吗?', '提示', {
    
    
       confirmButtonText: '确定',
       cancelButtonText: '取消',
       type: 'warning'
    }).then(() => {
    
    
       if ( this.lang === 'zh-CN' ) {
    
    
          this.lang = 'en-US';
          this.$i18n.locale = this.lang;//关键语句
       }else {
    
    
          this.lang = 'zh-CN';
          this.$i18n.locale = this.lang;//关键语句
       }
    }).catch(() => {
    
    
       this.$message({
    
    
           type: 'info',
       });          
    });
}

The key point here is the ''key statement'': this.$i18n.locale, when you assign the value 'zh-CN', the navigation bar will become Chinese; when the value is 'en-US' , becomes English.

Scenario use

The use of the vue.js internationalization vue-i18n plug-in, the usage instructions in the template text, component method, js, and return method:

1. Use { {$t("xxx")}} in the text

{ {$t(“register.register”)}}

2. Use $t('xxx') in the component method

:title=“type===1 ? $t(‘selectDevice’) : $t(‘selectProduct’)”

3. Use in the js method: this.$i18n.t('xxx')

this.$i18n.t(‘register.imgCodeFirst’)')

this. $i18n.t('disband_p')+`$ {ele.name} `+ this.$i18n.t(‘layer’)

4. In the method returned after the request

If it is used in the method returned after the request, you need to define a variable above, var this_ = this; and then use this_ inside to use it normally

Toast.info(this_.$i18n.t(‘register.getMsgCodeSucceed’));

5. How to write in the code in data()

label:this.$t(‘message.en’),

If the content is on an array or object, the official solution is to suggest that we write the expression into the computed attribute instead of data. insert image description here