print all sessionStorage and localStorage data

print-storage.js

var i;

document.write('<h2>local storage</h2>');
for (i = 0; i < localStorage.length; i++)   {
  const key = localStorage.key(i);
  const value = localStorage.getItem(key);
  document.write(`<li> <b>${key}</b>: ${value}</li>`);
}

document.write('<h2>session storage</h2>');
for (i = 0; i < sessionStorage.length; i++) {
  const key = sessionStorage.key(i);
  const value = sessionStorage.getItem(key);
  document.write(`<li> <b>${key}</b>: ${value}</li>`);
}