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This article mainly introduces the effect of using vue-i18n to switch between Chinese and English. It is very good and has certain reference value. Friends in need can refer to
vue-i18n warehouse address: https:// github.com/kazupon/vue-i18n
Compatibility:
Supports Vue.js 2.x or above
Installation method: (this Only npm is demonstrated everywhere)
npm install vue-i18n
Usage:
1. Introduce vue-i18n in main.js (the premise is that vue must be introduced first)
import VueI18n from 'vue-i18n' Vue.use(VueI18n)
2. Prepare local translation information
const messages = { zh: { message: { hello: '好好学习,天天向上!' } }, en: { message: { hello: 'good good study, day day up!' } } }
3. Create a VueI18n instance with options
const i18n = new VueI18n({ locale: 'en', // 语言标识 messages })
4. Mount i18n to the vue root instance
const app = new Vue({ router, i18n, ...App }).$mount('#app')
5. Use
<p id="app"> <h1 style="font-size: 16px; text-align: center;">{{ $t("message.hello") }}</h1> </p>
in the HTML template to check the running effect:
The language identifier we just selected is "en" English, now change it to "zh" Chinese, and check the effect
const i18n = new VueI18n({ locale: 'zh', // 语言标识 messages })
This way you can easily achieve internationalization. In actual development, there must be a lot of page content. We can put the corresponding language Information is saved as different json objects
const i18n = new VueI18n({ locale: 'en', // 语言标识 messages: { 'zh': require('./common/lang/zh'), 'en': require('./common/lang/en') } })
zh.js
// 注意:一定是 exports,不是 export,否则会报错,报错信息是下列的中的内容不是 string module.exports = { message: { title: '运动品牌' }, placeholder: { enter: '请输入您喜欢的品牌' }, brands: { nike: '耐克', adi: '阿迪达斯', nb: '新百伦', ln: '李宁' } }
en.js
module.exports = { message: { title: 'Sport Brands' }, placeholder: { enter: 'Please type in your favorite brand' }, brands: { nike: 'Nike', adi: 'Adidas', nb: 'New Banlance', ln: 'LI Ning' } }
Next, when using it in the HTML template, pay special attention to the International writing
// HTML <p id="app"> <p style="margin: 20px;"> <h1>{{$t("message.title")}}</h1> <input style="width: 300px;" class="form-control" :placeholder="$t('placeholder.enter')"> <ul> <li v-for="brand in brands">{{brand}}</li> </ul> </p> </p> // JS data () { return { brands: [this.$t('brands.nike'), this.$t('brands.adi'), this.$t('brands.nb'), this.$t('brands.ln')] } },
Check the compilation effect:
Now change to English:
In the above operations, we switch languages by manually modifying the locale attribute value. In fact, we prefer that the browser automatically recognizes it. Here we can use cookie
1 to create a new cookie.js file. Used to read cookies
function getCookie(name,defaultValue) { var arr, reg = new RegExp("(^| )" + name + "=([^;]*)(;|$)"); if (arr = document.cookie.match(reg)) return unescape(arr[2]); else return defaultValue; } export { getCookie }
2. Introduce this js in main.js and obtain the browser language through the PLAY_LANG attribute
const i18n = new VueI18n({ locale: getCookie('PLAY_LANG','zh'), // 语言标识 messages: { 'zh': require('./common/lang/zh'), 'en': require('./common/lang/en') } })
You need to pay attention to two extremely error-prone places here. :
(1). Write $t() as $()
(2). There are attributes with the same name in the same object in json
vue-i18n provides a global configuration parameter called "locale". By changing the value of locale, you can switch between different languages
The following case borrows the pop-up window style of Element UI. The above steps will not be described in detail. Just go to the core code.
// template <h2>{{$t('test')}}</h2> <button type="button" class="btn btn-success" @click="changeLocale">中文/EN</button> // js方法 changeLocale () { this.$confirm(this.$t('layer.toggle'), this.$t('layer.tips'), { confirmButtonText: this.$t('button.ok'), cancelButtonText: this.$t('button.cancel'), type: 'warning' }).then(() => { let locale = this.$i18n.locale locale === 'zh' ? this.$i18n.locale = 'en' : this.$i18n.locale = 'zh' }).catch(() => { this.$message({ type: 'info', }) }) },
Effect:
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