JavaScript Tips and Tricks

Destructuring

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Destructuring makes it easier to extract values from objects and arrays.

const { name, age, role = 'guest' } = user;
const [first, ...rest] = items;

Optional Chaining

Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Optional chaining prevents errors when accessing deeply nested properties.

const city = user?.address?.city ?? 'Unknown';

Array Methods

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const adults = users
  .filter(u => u.age >= 18)
  .map(u => u.name)
  .sort();

Async / Await

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async function fetchPosts() {
  const res = await fetch('/api/posts');
  return res.json();
}