步骤一：安装**vue-i18n** npm install vue-i18n --save 步骤二：**main.js**文件的配置，在**main.js**中添加以下跟**vue-i18n**的使用有关的配置项 ``` // 引入i18n国际化插件 import VueI18n from 'vue-i18n' Vue.use(VueI18n) // 注册i18n实例并引入语言文件，文件格式等下解析 const i18n = new VueI18n({ locale: 'zh', messages: { 'zh': require('@/assets/languages/zh.json'), 'en': require('@/assets/languages/en.json') } }) //将i18n注入到vue实例中 new Vue({ el: '#app', router, store, i18n, components: { App }, template: '<App/>' }) ``` 两个语言文件（zh.json，en.json）源码如下： en.json ``` { "common": { "home": "Home", "login": "Login", "register": "Register", "appDownload": "APP Download", "aboutUs": "About Us", "faq": "FAQ", "contact": "Contact Us", "join": "Join Us", "copyright": "Copyright © ZLGMcu Ltd", "news": "News", "toggle": "Toggle", "welcome": "Welcome, ", "userinfo": "Userinfo", "firstPage": "Home", "setting": "Setting", "exit": "Exit" }, "message": { "hint1": "Please Input Nickname", "hint2": "Please Input Username", "hint3": "Please Input Password", "hint4": "Don't find picture", "hint5": "No Account?", "hint6": "Register Now", "hint7": "Remember me", "hint8": "Can't login in?", "placeHolder1": "Nickname", "placeHolder2": "Username or Phone Number or Email", "placeHolder3": "Password(8 Digits at Least)" } } ``` **zh.json:** ``` { "common":{ "home": "首页", "login": "登录", "register": "注册", "appDownload": "APP下载", "aboutUs": "关于我们", "faq": "常见问题", "contact": "联系方式", "join": "加入我们", "copyright": "版权说明 © 广州xxx有限公司", "news": "消息", "toggle": "切换", "welcome": "欢迎您，", "userinfo": "个人信息", "firstPage": "主页", "setting": "设置", "exit": "退出" }, "message":{ "hint1": "请输入昵称", "hint2": "请输入账号", "hint3": "请输入密码", "hint4": "没有找到", "hin5": "没有账号？", "hint6": "马上注册", "hint7": "记住我", "hint8": "登录遇到问题？", "placeHolder1": "昵称", "placeHolder2": "用户名、手机号或邮箱", "placeHolder3": "密码（至少8位字符）" } } ``` 步骤三：使用vue-i18n，请只留意划线或框框部分  代码中的common.welcome对应语言文件中对应的项，各个不同的项引用方式一样，因此不全部展示，点击切换语言触发changeLanguage()方法，改变i18n实例中locale的值，进而实现语言的切换。此文章只展示了英文中文两种语言，其实多语言也一样，只要多写几个语言文件，然后在main.js中进行对应的配置就行。 > 由于main.js中设置了默认显示zh即中文，所以没有点击切换语言按钮前的效果为： 假如在js中需要国际化，可写成以下形式，举个data中的值国际化的例子： ``` computed: { type () { return this.$t('xxx.xxx.xxx') } } 或者： data () { return { msg: '默认文字' } } methods: { changeLanguage () { // 同上，以下多加一行 this.msg = this.$t('xxx.xxx.xxx') } } ```