JavaScript: Storing and retrieving objects with localStorage

Using JavaScript local storage, how can store an object and then retrieve data from that that object?  

Here is an example of my object:
localStorage.setItem('data', {color:'red', number:5});

When I try to retrieve that data I get [object Object]
alert( localStorage.getItem('data') );

How can I get the value of data.color from that object?
LVL 10
skijAsked:
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zzynxSr. Software engineerCommented:
Does this work?
alert( localStorage.getItem('data').color );

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zzynxSr. Software engineerCommented:
No it doesn't.
@ http://www.w3schools.com/html/html5_webstorage.asp I read:
Name/value pairs are always stored as strings. Remember to convert them to another format when needed!
So, I think you can't do what you want to do (since you can't store objects).
Instead you should use:

localStorage.color = 'red';
localStorage.number = '5';

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then when you need the number as a number you should convert it:

var myNumber = Number(localStorage.number);

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Randy PooleCommented:
try this assuming you have jQuery enabled for the verification.

var _verstorage=false;
var _hasstorage=false;
$(function(){
	verifyStorage();
	if (_verstorage) localStorage.myVar="my value";
	alert(localStorage.myVar);
});
function verifyStorage(){
	_hasstorage=!(typeof(Storage) !== "undefined");
	if (_hasstorage && !_verstorage){
		alert("Local storage not supported or enabled");
		_verstorage=true;
	}
}

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Julian HansenCommented:
Or you could just JSON your object before you store it like this
localStorage.setItem('data', JSON.stringify({color: 'red', number: 5}));
var d = JSON.parse(localStorage.getItem('data'));
console.log(d.color);

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