LocalStorage.js

const myNumber = 42

localStorage.removeItem('number')
console.log(localStorage.getItem('number'))
localStorage.setItem('number', myNumber.toString())
console.log(localStorage.getItem('number'))
localStorage.clear()

const object = {
  name: 'Max',
  age: 20
}

localStorage.setItem('person', JSON.stringify(object))

const raw = localStorage.getItem('person')
const person = JSON.parse(raw)
person.name = 'Vladilen'

console.log(person)

window.addEventListener('storage', event => {
  console.log(event)
})

// window.onstorage = () => {}