"```javascript function getStorageSize() { let totalSize = 0;
for (let i = 0; i < localStorage.length; i++) {
const key = localStorage.key(i);
const value = localStorage.getItem(key);
totalSize += key.length + value.length;
}
for (let i = 0; i < sessionStorage.length; i++) {
const key = sessionStorage.key(i);
const value = sessionStorage.getItem(key);
totalSize += key.length + value.length;
}
return totalSize;
}
const storageSize = getStorageSize();
console.log(Total size of localStorage and sessionStorage: ${storageSize} bytes);
This JavaScript function `getStorageSize` calculates the total size of `localStorage` and `sessionStorage` by iterating through all keys and values in each storage and summing up their lengths. The function then returns the total size in bytes. Finally, we call the function and log the total size to the console."
