Import & Export localStorage between domains

storage.js

function exportLocalStorage () {
  var output = {};
  for (var key in localStorage) {
    if (!localStorage.hasOwnProperty(key)) {
      continue;
    }
    output[key] = localStorage[key];
  }
  return JSON.stringify(output).replace(/'/g, '\\\'').replace(/"/g, '\\"');
}

function importLocalStorage (input) {
  input = JSON.parse(input);
  localStorage.clear();
  for (var key in input) {
    if (!input.hasOwnProperty(key)) {
      continue;
    }
    localStorage.setItem(key, input[key]);
  }
}