How to use Vue to implement multi-language switching effects

How to use Vue to achieve multi-language switching effects

With the development of globalization, multi-language support has become one of the basic needs of many websites and applications. For applications developed using the Vue.js framework, it is very important to achieve multi-language switching and have beautiful special effects. This article will introduce how to use Vue to implement multi-language switching effects and give specific code examples.

First of all, we need to prepare multi-language resource files. These resource files can be in JSON format, one file for each language. For example, we have two languages: English and Chinese. We can prepare two files: en.json and zh.json. Among them, the en.json file contains English translation content, and the zh.json file contains Chinese translation content. Here is a simple example:

en.json:

{
  "homePage": "Home",
  "aboutPage": "About",
  "contactPage": "Contact"
}

zh.json:

{
  "homePage": "首页",
  "aboutPage": "关于",
  "contactPage": "联系我们"
}

Next, we use Vue’s i18n plugin To achieve multi-language switching. We first need to install the vue-i18n plugin:

npm install vue-i18n

Then, in the entry file of our Vue application, we import and use the vue-i18n plugin:

import Vue from 'vue';
import VueI18n from 'vue-i18n';

Vue.use(VueI18n);

Next, load and set the multi-language resource file:

const messages = {
  en: require('./en.json'),
  zh: require('./zh.json')
};

const i18n = new VueI18n({
  locale: 'en', // 默认语言
  fallbackLocale: 'en', // 当前语言未设置翻译时使用的备选语言
  messages // 设置语言对应的翻译内容
});

new Vue({
  i18n,
  // ...
}).$mount('#app');

In the above code, we load the multi-language resource file through the require function and set it Assign a value to the messages variable. Then, we create a new VueI18n instance through new VueI18n() and pass in the corresponding configuration parameters.

Next, we can use the $t method in the Vue component to get the translated text. For example, in our page component, we can use it like this:

<template>
  <div>
    <router-link :to="{ name: 'home' }">{{ $t('homePage') }}</router-link>
    <router-link :to="{ name: 'about' }">{{ $t('aboutPage') }}</router-link>
    <router-link :to="{ name: 'contact' }">{{ $t('contactPage') }}</router-link>
  </div>
</template>

<script>
export default {
  // ...
};
</script>

In the above code, we use the $t method to combine homePage, aboutPage and contactPage These translation identifiers are converted into actual text to achieve multi-language switching.

Finally, we can add a drop-down box for switching languages ​​in the Vue component to switch the language of the current application. Here is a simple example:

<template>
  <div>
    <select v-model="$i18n.locale">
      <option value="en">English</option>
      <option value="zh">中文</option>
    </select>
  </div>
</template>

In the above code, we use the v-model directive to save the selected language in the $i18n.locale variable. When the selected language changes, Vue automatically updates the translation content in the application.

Through the above steps, we can implement multi-language switching effects based on Vue.

Summary:

This article introduces how to use Vue to achieve multi-language switching effects. By using the vue-i18n plug-in, we can easily load and set up multi-language resource files, and use the $t method in the Vue component to get the translated content. At the same time, we also implemented the function of dynamically switching application languages ​​by adding a drop-down box for switching languages. I hope this article will be helpful to developers who need to implement multi-language switching effects.

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