React Programming Tutorials, Guides & Best Practices

import { useTranslation } from 'react-i18next';

export default function Home() {
  const { t } = useTranslation();
  return (
    <div>
      <h1>{t('title')}</h1>
    </div>
  );
}

Create pages/About.js:

Your React app must support legal localization where applicable.

In 2025, Google rewards localized content.

{
  "welcome": "Welcome to our platform!",
  "language": "Language",
  "date_example": "Today's date is {{date, datetime}}",
  "price_example": "Price: {{price, currency}}"
}

Example fr.json:

Key Features:

• Simplicity: Create stores using a straightforward API without the need for reducers or action types.
• Performance: Optimized for performance with selective rendering and minimal re-renders.
• Flexibility: Supports custom hooks, middleware, and integration with other libraries.
• No Providers: Unlike Redux, Zustand doesn't require wrapping your app with context providers.

import React, { useState, useCallback } from 'react';

function Counter() {
  const [count, setCount] = useState(0);

  const increment = useCallback(() => setCount(c => c + 1), []);
  const decrement = useCallback(() => setCount(c => c - 1), []);

  return (
    <div>
      <button onClick={increment}>+</button>
      <span>{count}</span>
      <button onClick={decrement}>-</button>
    </div>
  );
}

By wrapping increment and decrement with useCallback, their references remain stable across renders, preventing unnecessary re-renders in child components that receive these functions as props.([GeeksforGeeks][2])