Local storage with JSON parse and stringify

local-storage-with-json-parse-stringify.js

var animal = {
 name: 'Karl',
 type: 'cat',
 color: 'black',
 age: 7
};

//convert JSON animal into a string
var dehydratedAnimal = JSON.stringify(animal);

//save it with local storage
window.localStorage.setItem('animal', dehydratedAnimal);

//get 'animal' and rehydrate it  (convert it back JSON)
var rehydratedAnimal = JSON.parse(window.localStorage.getItem('animal'));

You can access it using ".", for example:

alert(rehydratedAnimal.name);