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Tutorial

Implementing Internationalization (i18n) in a Large React Application (2025 Guide) 

import React from 'react';
import { useTranslation } from 'react-i18next';

const Home = () => {
  const { t, i18n } = useTranslation();

  const changeLanguage = (lng) => {
    i18n.changeLanguage(lng);
  };

  const today = new Date();
  const price = 199.99;

  return (
    <div className="p-4">
      <h1>{t('welcome')}</h1>

      <div className="mt-4">
        <strong>{t('language')}:</strong>
        <button onClick={() => changeLanguage('en')} className="ml-2">EN</button>
        <button onClick={() => changeLanguage('fr')} className="ml-2">FR</button>
      </div>

      <p>{t('date_example', { date: today })}</p>
      <p>{t('price_example', { price })}</p>
    </div>
  );
};

export default Home;

Install i18next-format plugin (optional):

May 04, 2025
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