React-intl
React-intl Internationaliztion API
API应用环境
React-intl的应用依赖于
Internationaliztion API，这些APIs现代浏览器和NodeJS（>0.12）内涵；html对于老版浏览器须要搭建一些环境；node
React-intl简要介绍
React-intl是FormatJS的一部分，内置实现Date/Number/Time的国际格式化；react
能够自定义映射关系，完成值对之间的替换（这是这篇文章的主要内容）；webpack
经过获取浏览器的language来设置显示中文/英文（经过自定义映射，而非自动全文转换）；git
经常使用于实现静态内容，如按钮文字，公司名称的转换；github
React框架结合国际化所须要的依赖包
"babel-core": "^6.22.1", "babel-loader": "^6.2.10", "babel-preset-env": "^1.1.8", "babel-preset-es2015": "^6.22.0", "babel-preset-react": "^6.22.0", "copy-webpack-plugin": "^4.0.1", "html-webpack-plugin": "^2.26.0", "react": "^15.4.2", "react-dom": "^15.4.2", "react-intl": "^2.2.3", "webpack": "^2.2.0", "webpack-del-plugin": "0.0.1", "webpack-dev-server": "^1.16.2", "webpack-notifier": "^1.5.0"
React-intl格式化语法
该部分有详细的介绍，所以忽略web
自定义国际型格式化
重点部分：该项目demo单一功能（internationalization） demo中每一部分都有详细的讲解chrome
index.jssegmentfault
import React from 'react';
import ReactDOM from 'react-dom';
// 从'react-intl'中引入addLocaleData,IntlProvider,FormattedMessage三个格式化组件；
import {addLocaleData,IntlProvider,FormattedMessage} from 'react-intl';
/*
*引入与navigator.languages[0]所对应的语言；
*若是没有引入对应的语言，会使用默认的“en”；
*致使FormattedMessage的映射不会成功；
*/
import zh from 'react-intl/locale-data/zh';
import en from 'react-intl/locale-data/en';
/*
*引入自定义的映射表；
*经过与FormattedMessage的id值来当索引映射返回值；
*/
import zh_CN from './locale/zh_CN';
import en_US from './locale/en_US';
import App from './components/app';
/*
*messages是render()时IntlProvider组件所传的props，属性名固定：messages；
*messages返回值为映射表，好比：'react-intl/locale-data/zh'&&'./locale/zh_CN'；
*/
let messages = {};
messages["en-US"] = en_US;
messages["zh-CN"] = zh_CN;
/*
*获取浏览器设置的语言；
*按我demo中的设置，返回["zh-CN", "zh", "en-US", "en"]，排序与语言设置顺序一直；
*/
const languages = navigator.languages;
const currentLang = languages[0];
console.log("languages: ", languages);
console.log("language: ", currentLang);
// 载入语言数据；
//载入一个addLocaleData(zh);
//载入多个；
addLocaleData([...zh,...en]);
ReactDOM.render(
// IntlProvider为'react-intl'指定的包裹组件名；
<IntlProvider locale={currentLang} messages={messages[currentLang]}>
<App />
</IntlProvider>,
document.body
)
/*
浏览器languages大全：
"af", "sq", "ar-SA", "ar-IQ", "ar-EG", "ar-LY", "ar-DZ", "ar-MA", "ar-TN", "ar-OM",
"ar-YE", "ar-SY", "ar-JO", "ar-LB", "ar-KW", "ar-AE", "ar-BH", "ar-QA", "eu", "bg",
"be", "ca", "zh-TW", "zh-CN", "zh-HK", "zh-SG", "hr", "cs", "da", "nl", "nl-BE", "en",
"en-US", "en-EG", "en-AU", "en-GB", "en-CA", "en-NZ", "en-IE", "en-ZA", "en-JM",
"en-BZ", "en-TT", "et", "fo", "fa", "fi", "fr", "fr-BE", "fr-CA", "fr-CH", "fr-LU",
"gd", "gd-IE", "de", "de-CH", "de-AT", "de-LU", "de-LI", "el", "he", "hi", "hu",
"is", "id", "it", "it-CH", "ja", "ko", "lv", "lt", "mk", "mt", "no", "pl",
"pt-BR", "pt", "rm", "ro", "ro-MO", "ru", "ru-MI", "sz", "sr", "sk", "sl", "sb",
"es", "es-AR", "es-GT", "es-CR", "es-PA", "es-DO", "es-MX", "es-VE", "es-CO",
"es-PE", "es-EC", "es-CL", "es-UY", "es-PY", "es-BO", "es-SV", "es-HN", "es-NI",
"es-PR", "sx", "sv", "sv-FI", "th", "ts", "tn", "tr", "uk", "ur", "ve", "vi", "xh",
"ji", "zu"];*/
app.js
/*
基本用法：
import React, {Component} from 'react';
import {FormattedMessage} from 'react-intl';
class App extends Component {
constructor(props) {
super(props);
}
render() {
/*
*FormattedMessage组件中的信息parser后显示以<span>包裹的文本；
*能够经过tagName指定其它标签包裹；
*以id属性的值"hello"为索引——索引到自定义的映射表'./locale/zh_CN'中去；
*messages['hello']——messages为父组件IntlProvider的props的messages属性；
*若没有上述的返回值，则显示defaultMessage的值"React Intl Translations Example";
*/
/*
*FormattedMessage添加子元素或ReactElement；
* <FormattedMessage id="hello">
* {(formattedValue)=>(
* <em>{formattedValue}</em>
* )}
* </FormattedMessage>
*/
return (
<div>
<h1>
<div>
<FormattedMessage
id="hello"
defaultMessage="React Intl Translations Example"
/>
</div>
</h1>
<h4>
<FormattedMessage
tagName = 'p'
id='superHello'
defaultMessage="Locales:北京"
values={{
someone:'zxdobest'
}}
/>
</h4>
<h2>
<FormattedMessage id="hello">
{(formattedValue)=>(
<em>{formattedValue}</em>
)}
</FormattedMessage>
</h2>
</div>
);
}
}
export default App;
*/
//
输出HTML块结构；
import React from 'react';
import { injectIntl, intlShape, FormattedMessage } from 'react-intl';
const ChildComponent = ({ intl }) => {
//传入的{intl}名称不可更改；
console.log(React.PropTypes)
const getMessage = intl.messages;
return(
<section>
{/*
*经过intl.messages获取映射属性的方法；
* 能够和任意内容（如：HTML标签）组合；
* */}
<a>{getMessage.hello}</a>
{/*经过FormattedMessage格式化，能够传入参数{values}*/}
<FormattedMessage
tagName = 'p'
id='superHello'
defaultMessage="Locales:北京"
values={{
someone:'zxdobest'
}}
/>
{/*
*这种结构，类同于intl.messages.superHello能够和其它内容任意组合；
*能且仅能获取superHello的映射；
* 目前还没有找到若是在第一种方法中传入values；
*/}
<FormattedMessage id="superHello" values={{
someone:'mihuartuanr'
}}>
{(formattedValue)=>(
<p>{formattedValue}</p>
)}
</FormattedMessage>
</section>
);
}
ChildComponent.propTypes = {
intl: intlShape.isRequired
}
export default injectIntl(ChildComponent);
常见问题
[React Intl] Missing locale data for locale: "zh-CN". Using default locale: "en" as fallback.
-
要引入所设locale的语言库
import enLocaleData from 'react-intl/locale-data/zh'该文件为react-intl包自动下载——还有一个好处：在咱们引入另外一个自定义的映射时，依旧能够使用react-intl原有的数字/时间等数据的国际格式化；添加指定语言库
addLocaleData(enLocaleData);
-
设置&获取浏览器的locale
chrome：
-
js获取浏览器语言设置：
let languages = navigator.languages;
console.log("languages: ", languages);
//=>languages: ["zh-CN", "zh", "en-US", "en"]
demo使用方法
安装有nodejs和webpack环境；
克隆或下载下来的文件夹进行
npm init -y安装依赖
npm install经过
npm run start利用本地服务器查看打开浏览器
localhost:3000查看页面
使用效果预览
参考文档
每日一句
-
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