react-intl.js

import 'normalize.css';

import qs from 'qs';
import { addLocaleData, IntlProvider, FormattedMessage } from 'react-intl';
import React from 'react';
import ReactDOM from 'react-dom';
import scriptjs from 'scriptjs';

const locale = qs.parse(location.search && location.search.slice(1)).locale || 'en-US';
const localePrefix = locale.slice(0, locale.indexOf('-'));

const scripts = [];

if (!window.Intl) {
  // should output by server by <script>
  scripts.push(`https://as.alipayobjects.com/g/component/intl/1.0.1/Intl.js`);
  scripts.push(`https://as.alipayobjects.com/g/component/intl/1.0.1/locale-data/jsonp/en-US.js`);
  // the following should be output by server template conditionally by <script>
  if (locale !== 'en-US') {
    scripts.push(`https://as.alipayobjects.com/g/component/intl/1.0.1/locale-data/jsonp/${locale}.js`);
  }
  // end
}
// should output by server by <script>
scripts.push(`https://as.alipayobjects.com/g/component/react-intl/2.0.0/locale-data/en.js`);
// the following should be output by server template conditionally by <script>
if (localePrefix !== 'en') {
  scripts.push(`https://as.alipayobjects.com/g/component/react-intl/2.0.0/locale-data/${localePrefix}.js`);
}
// end

const ready = () => {
  addLocaleData(window.ReactIntlLocaleData[localePrefix]);

  window.app = {
    // output by server conditional
    'zh-Hans-CN': {
      'app.zh': '选择中文',
      'app.en': '选择英文',
    },
    'en-US': {
      'app.zh': 'choose chinese',
      'app.en': 'choose english',
    },
  };

  const defaultApp = window.app['en-US'];

  const Test = React.createClass({
    render() {
      return (<div>
        <p>
          npm install react-intl@2.0.0
        </p>
        <p>
          <a href="?locale=en-US"><FormattedMessage
            id="app.en"
            defaultMessage={defaultApp['app.en']}
          /></a>
        </p>
        <p>
          <a href="?locale=zh-Hans-CN"><FormattedMessage
            id="app.zh"
            defaultMessage={defaultApp['app.zh']}
          /></a>
        </p>
      </div>);
    },
  });

  ReactDOM.render(
    <IntlProvider
      locale={locale}
      messages={window.app[locale] || defaultApp}
    >
      <Test />
    </IntlProvider>,
    document.getElementById('__react-content'));
};

if (scripts.length) {
  scriptjs(scripts, ready);
} else {
  ready();
}