~mostafa_al_mahmud

Top 10 Important Things in React Every Developer Should Know

A practical recap of foundational React concepts including lifecycle, hooks, composition patterns, and rendering decisions.

#react#javascript#frontend#web-development
React fundamentals cover image

Hook-based side effect pattern

import { useEffect, useState } from 'react';

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

  useEffect(() => {
    document.title = `Count: ${count}`;
  }, [count]);

  return <button onClick={() => setCount(count + 1)}>{count}</button>;
}

State and effects replace many class lifecycle patterns in modern React.

Original publication

This post is adapted from the original Medium article: Top 10 Important Things In React That Every React Developer Must know

Concepts highlighted

  1. Component lifecycle mental model.
  2. Hooks (useState, useEffect).
  3. PropTypes for runtime prop validation.
  4. Default props strategy.
  5. Fragments to avoid unnecessary wrapper nodes.
  6. Higher-order component reuse patterns.
  7. Stateless component simplicity.
  8. JSX as composable UI syntax.
  9. Virtual DOM rendering model.
  10. Conditional rendering techniques.

Practical takeaway

React mastery comes less from memorizing APIs and more from understanding render timing, state boundaries, and composition choices. These fundamentals still matter across modern React versions.

Read more

For full examples and the original detailed explanation, read the source article:

Read the full article on Medium

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