How can a JavaScript object be saved in localStorage?

Using JSON.stringify() to serialize an object into a string before saving and JSON.parse() to deserialize the string back into an object when retrieving.

// Example object
const userSettings = {
  theme: 'dark',
  fontSize: 16,
  notifications: true
};

// Saving the object to localStorage
localStorage.setItem('userSettings', JSON.stringify(userSettings));

// Retrieving the object from localStorage
const storedSettings = localStorage.getItem('userSettings');

// Deserializing the string back into an object
if (storedSettings) {
  const parsedSettings = JSON.parse(storedSettings);
  console.log(parsedSettings);
  // Will output: { theme: 'dark', fontSize: 16, notifications: true }
}