How to store a (dictionary) object in JavaScript localStorage?

Question

I have a very simple dictionary .

var meta = {'foo':'1','moo':'2'}

I want to store this in the local storage and retrieve it.

 window.localStorage.setItem("meta", meta);
 var meta1 = window.localStorage.getItem("meta");
 alert(meta1['foo']);

The above does not work. How can I do it?

Answer 1

localStorage converts it's input to strings, so you will have to convert your objects to JSON strings, and back:

window.localStorage.setItem("meta", JSON.stringify(meta));
var meta1 = JSON.parse(window.localStorage.getItem("meta"));
alert(meta1['foo']);

---

The reason your code didn't work is because setting a object in localStorage sets it's value to "[object Object]" (object.toString() returns "[object Object]"):

window.localStorage.setItem("objectInput", {some:"object"});
var objectOutput = window.localStorage.getItem("objectInput");
alert(objectOutput);
// This returns "[object Object]"