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How to do multi-language processing in Vue?

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2023-06-11 15:22:403475browse

In actual development, multi-language support for websites or applications has become a necessary feature. As a popular JavaScript framework, Vue also supports multiple languages. This article will introduce the scheme and implementation details of multi-language processing in Vue.

  1. Solution selection
    There are many multi-language support solutions, including but not limited to the following:

1.1. Front-end integrated
In the front-end Implement multi-language functionality and support through vue-i18n plug-in. Introducing the corresponding language pack as an independent component can display different content in different language environments. The advantage of this method is that it does not require server support, but it requires translation and management of multi-language related texts on the front end, so it is suitable for websites or applications that do not have high multi-language requirements.

1.2. Back-end support
Store multi-language content in the back-end database and display it on the front-end in the form of interface calls. This method requires server support, but text translation and management can be left to language professionals from various countries. This method is suitable for large websites or enterprise management systems that require a high degree of customization or permission control.

Under the premise of this article, we will use vue-i18n, a front-end integrated method, for multi-language processing. The next step will introduce the use of Vue-i18n in detail.

  1. How to use Vue-i18n
    Vue-i18n is a multi-language library officially launched by Vue, which provides multiple language switching methods, responsive translation, internationalization processing and other functions. By introducing the vue-i18n package, we can easily implement multi-language functions in Vue.

2.1. Install and introduce Vue-i18n
The installation of Vue-i18n is very simple and can be installed through npm or yarn:

npm install vue-i18n

Introduce vue- in the Vue component i18n:

import Vue from 'vue';
import VueI18n from 'vue-i18n';
Vue.use(VueI18n);

2.2. Configure multi-language
Define multi-language content in the Vue component:

const messages = {
  en: {
    welcome: 'Welcome to our website'
  },
  zh: {
    welcome: '欢迎访问我们的网站'
  }
}

2.3. Create a VueI18n instance
Create an instance of VueI18n and initialize:

const i18n = new VueI18n({
  locale: 'en',
  messages
});

The Locale attribute sets the default language to 'en', and messages are a collection of multilingual content, including key-value pairs in some common languages.

2.4. Using i18n in HTML
In HTML, we can call multilingual content through the $t or v-t directive:

<div>{{ $t("message.welcome") }}</div>

where "message.welcome" is defined in For the key value in the messages attribute, Vue-i18n will dynamically display the corresponding text based on the current language.

2.5. Switch language
We can change the current language through the i18n object:

i18n.locale = ‘zh’;

2.6. Responsive translation
Vue-i18n provides a responsive translation method. That is, the i18n.t function. Using this method, the dynamics of language switching will be automatically monitored and the text will be automatically translated based on the current language. As shown below:

export default {
  data() {
    return {
      welcomeText: this.$t('message.welcome'),
    };
  },
};

In the above code snippet, when the language is switched, the text in welcomeText will automatically update to the corresponding language version.

  1. Summary
    Vue-i18n provides a simple and easy-to-use multi-language solution. Through convenient interface calls and Vue component integration, developers can quickly integrate and deploy multi-language functions. In actual projects, we can combine the characteristics of national language and culture to make multilingual solutions that are more in line with actual needs, making websites or applications more friendly and people-friendly.

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