Functions to handle localstorage object with expiration

scripts.js

function setWithExpiry(key, value, ttl) {
	const now = new Date()

	const item = {
		value: value,
		expiry: now.getTime() + ttl
	}
	localStorage.setItem(key, JSON.stringify(item))
}

function getWithExpiry(key) {
	const itemStr = localStorage.getItem(key)
	if (!itemStr) {
		return null
	}
	const item = JSON.parse(itemStr)
	const now = new Date()
	// compare the expiry time of the item with the current time
	if (now.getTime() > item.expiry) {
		// If the item is expired, delete the item from storage
		// and return null
		localStorage.removeItem(key)
		return null
	}
	return item.value
}