How to use Vue and Element-UI for international multi-language processing

How to use Vue and Element-UI for international multi-language processing

Introduction:
In an era of increasing globalization, in order to enable websites and applications to adapt to users in different countries and regions , internationalized multilingual processing is becoming more and more important. Vue is a popular front-end development framework, and Element-UI is a set of UI libraries based on Vue. This article will introduce how to use Vue and Element-UI for international multi-language processing.

1. Install and introduce necessary dependent libraries
First, we need to install and introduce some necessary dependent libraries. In the root directory of the Vue project, open a terminal and run the following command:

npm install vue-i18n
npm install vant

Then, in the project's entry file (usually main.js), introduce and use these dependent libraries:

import Vue from 'vue'
import VueI18n from 'vue-i18n'
import vant from 'vant'
import 'vant/lib/index.css'

Vue.use(VueI18n)
Vue.use(vant)

// 初始化i18n实例
const i18n = new VueI18n({
  locale: 'zh-CN',  // 默认语言
  fallbackLocale: 'en',  // 如果当前语言包中没有对应的翻译文本，就会使用fallbackLocale中定义的语言包
  messages: {
    'zh-CN': require('./lang/zh-CN.json'),  // 引入中文语言包
    'en': require('./lang/en.json')  // 引入英文语言包
  }
})

// 将i18n实例绑定到Vue实例上
new Vue({
  el: '#app',
  i18n,
  render: h => h(App)
})

2. Create language pack files
Create a lang folder in the root directory of the project, and create multiple language pack files in the folder. For example, we create a zh-CN.json file and an en.json file to place the Chinese and English translated texts respectively.

zh-CN.json file example:

{
  "hello": "你好",
  "welcome": "欢迎使用",
  "button": {
    "submit": "提交",
    "cancel": "取消"
  },
  ...
}

en.json file example:

{
  "hello": "Hello",
  "welcome": "Welcome",
  "button": {
    "submit": "Submit",
    "cancel": "Cancel"
  },
  ...
}

3. Use internationalized text in Vue components
When internationalization is required In the Vue component that is processed, we can use Vue's built-in instructions or filters to obtain the corresponding translated text.

Example of using Vue built-in instructions:

<template>
  <div>
    <h2 id="t-hello">{{ $t('hello') }}</h2>
    <p>{{ $t('welcome') }}</p>
    <button @click="submit">{{ $t('button.submit') }}</button>
    <button @click="cancel">{{ $t('button.cancel') }}</button>
  </div>
</template>

<script>
export default {
  name: 'MyComponent',
  methods: {
    submit() {
      // 提交操作
    },
    cancel() {
      // 取消操作
    }
  }
}
</script>

Example of using Vue filter:

<template>
  <div>
    <h2 id="hello-t">{{ 'hello' | t }}</h2>
    <p>{{ 'welcome' | t }}</p>
    <button @click="submit">{{ 'button.submit' | t }}</button>
    <button @click="cancel">{{ 'button.cancel' | t }}</button>
  </div>
</template>

<script>
export default {
  name: 'MyComponent',
  filters: {
    t(key) {
      return this.$t(key)
    }
  },
  methods: {
    submit() {
      // 提交操作
    },
    cancel() {
      // 取消操作
    }
  }
}
</script>

4. Switching languages
The last step is to implement the function of switching languages. This can be achieved by adding a button or drop-down menu to switch languages.

Example:

<template>
  <div>
    <button @click="changeLocale('zh-CN')">中文</button>
    <button @click="changeLocale('en')">English</button>
  </div>
</template>

<script>
export default {
  name: 'LanguageSwitcher',
  methods: {
    changeLocale(locale) {
      this.$i18n.locale = locale
    }
  }
}
</script>

Summary:
This article introduces how to use Vue and Element-UI for international multi-language processing. By installing and introducing relevant dependent libraries, creating language pack files, and using internationalized text in Vue components, we can achieve multi-language adaptation of websites and applications. I hope this article will be helpful to you in international multi-language processing.

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