localStorage in angular

gistfile1.js

// Grab or create stored data
$scope.localData = JSON.parse(localStorage.getItem('localData')) || {};

// Watch for items to change and update data in localStorage
$scope.$watch('localData', function(localData, oldLocalData){
  if (localData != oldLocalData) {
    localStorage.setItem('localData', JSON.stringify($scope.localData));
  }
}, true);