• Local Storage & Session Storage: localStorage.setItem(), getItem(), removeItem()
• Cookies (HTTP Cookies): expiration, path, domain
• IndexedDB: structured data storage for larger capacities

localStorage

// Store data
localStorage.setItem('username', 'Alice');

// Retrieve data
const user = localStorage.getItem('username');
console.log(user); // "Alice"

// Remove data
localStorage.removeItem('username');