vue项目实现中英文切换

需求：vue项目实现中英文切换

效果图如下：

步骤一：安装vue-i18n

注意：如果使用vue3，则不用指定版本安装，如果是vue2，就要指定版本如下：

npm i vue-i18n@8.23.0

步骤二：创建基本目录（language文件夹是翻译的数据文件，views文件夹下的是页面，part1和part2代表项目的不同模块，每个模块下都有对应的页面）

步骤三：简单编写下基本界面

App.vue

<template>
  <div id="app">
    <!-- 111 -->
    <!-- 中英文切换 -->
    按我切换中英文
    <button @click="chagelanguage">{{ language }}</button>
    <router-view />
  </div>
</template>
<script>
export default {
  data() {
    return {
      language: "en",//中英文切换
    }
  },
  methods: {
    // 中英文切换
    chagelanguage() {
      this.$i18n.locale == 'zh' ? this.$i18n.locale = 'en' : this.$i18n.locale = 'zh'   //设置中英文模式
      if (this.$i18n.locale === 'zh') {
        this.language = "en"
      } else {
        this.language = "zh"
      }
    },
  }
}
</script>
<style lang="less" scoped></style>

views/part1/page1.vue

<template>
    <div>
        <h1 style="color:black">part1 page1</h1>
        <p><span style="color:blue;font-weight:bold;font-size: 20px;">测试文本:</span>{{ $t("part1.page1.content") }}</p>
        <br>
        <br>
        <a style="color: red;" @click="gopart1page2">点我跳转part1 page2</a>
    </div>
</template>
<script>
export default {
    methods: {
        gopart1page2() {
            // 跳转part1 page2（同一模块下的不同页面）
            this.$router.push('/part1page2Router')
        }
    }
}
</script>
<style>
</style>

views/part1/page2.vue

<template>
    <div>
        <h1>part1 page2</h1>
        <p><span style="color:blue;font-weight:bold;font-size: 20px;">测试文本:</span>{{ $t("part1.page2.content") }}</p>
        <br>
        <br>
        <a style="color: red;" @click="gopart2page1">点我跳转part2 page1</a>
        <br>
        <a style="color: red;" @click="goback">返回</a>
    </div>
</template>
<script>
export default {
    methods: {
        gopart2page1() {
            // 跳转part1 page2（不同模块下的不同页面）
            this.$router.push('/part2page1Router')
        },
        goback() {
            // 返回上一页面
            this.$router.go(-1)
        }
    }
}
</script>
<style></style>

views/part2/page1.vue

<template>
    <div>
        <h1>part2 page1</h1>
        <p><span style="color:blue;font-weight:bold;font-size: 20px;">测试文本:</span>{{ $t("part2.page1.content") }}</p>
        <br>
        <br>
        <a style="color: red;" @click="goback">返回</a>
    </div>
</template>
<script>
export default {
    methods: {
        goback() {
            // 返回上一页面
            this.$router.go(-1)
        }
    }
}
</script>
<style></style>

router/index.js

import Vue from 'vue'
import VueRouter from 'vue-router'
import part1page1 from '@/views/part1/page1'
import part1page2 from '@/views/part1/page2'
import part2page1 from '@/views/part2/page1'
Vue.use(VueRouter)
const routes = [
  {
    path: '/',
    component: part1page1
  }, {
    path: '/part1page2Router',
    component: part1page2
  }, {
    path: '/part2page1Router',
    component: part2page1
  }
]
const router = new VueRouter({
  routes
})
export default router

步骤四：编写翻译文件

language/data/part1/page1.js

const data = {
    ZH: {
        // part1 page1
        content: "我是part1page1,喜欢吃苹果！"
    },
    EN: {
        content: "I am Part1Page1 and enjoy eating apples!"
    }
}
export default data

language/data/part1/page2.js

const data = {
    ZH: {
        // part1 page1
        content: "我是part1page2,喜欢吃草莓！"
    },
    EN: {
        content: "I am Part1Page1 and enjoy eating strawberries!"
    }
}
export default data

language/data/part1/index.js

import page1 from "./page1"
import page2 from "./page2"
export default {
    page1,
    page2
}

language/data/part2/page1.js

const data = {
    ZH: {
        // part1 page1
        content: "我是part2page1,喜欢吃芒果！"
    },
    EN: {
        content: "I am Part1Page1 and enjoy eating mangoes!"
    }
}
export default data

language/data/part2/index.js

import page1 from "./page1"
export default{
    page1
}

language/en.js

import part1 from './data/part1/index'
import part2 from './data/part2/index'
const en = {
    language: {
        name: "english"
    },
    // part1
    part1: {
        page1: {
            content: part1.page1.EN.content
        },
        page2: {
            content: part1.page2.EN.content
        }
    },
    // part2
    part2: {
        page1: {
            content: part2.page1.EN.content
        }
    },
}
export default en

language/zh.js

import part1 from './data/part1/index'
import part2 from './data/part2/index'
const zh = {
    language: {
        name: "中文"
    },
    // part1
    part1: {
        page1: {
            content: part1.page1.ZH.content
        },
        page2: {
            content: part1.page2.ZH.content
        }
    },
    // part2
    part2: {
        page1: {
            content: part2.page1.ZH.content
        }
    },
}
export default zh

步骤五：全局配置

main.js

import Vue from 'vue'
import App from './App.vue'
import router from './router'
import store from './store'
//中英文切换
import ZH from '@/language/zh.js'  //中文最终汇总暴露的信息
import EN from '@/language/en.js'  //英文
import VueI18n from 'vue-i18n'
Vue.use(VueI18n)
const i18n = new VueI18n({
  // localStorage.getItem('languageSet') || 'zh'
  locale: 'zh',   //从localStorage里获取用户中英文选择，没有则默认中文
  messages: {
    'zh': ZH,
    'en': EN
  }
})
new Vue({
  i18n,
  router,
  store,
  render: h => h(App)
}).$mount('#app')

另外：

如果要在js中引用如下

this.$t("part1.page1.content")

在属性中引用如下

<el-tooltip :content="$t('part1.page1.content')" placement="top"></el-tooltip>