Using HTML 5 local storage

HTML 5 includes a significant bump in what the browser itself can store (up from 4k for total cookie storage to something on the order of 5-10mb). Here’s a simple code sample that illustrates how to access local storage in HTML5:

//  First, make sure our browser supports HTML 5 local storage
if (typeof(localStorage) == 'undefined' ) 
{
	alert('Your browser does not support HTML5 localStorage. Try upgrading.');
}
else 
{
	try 
	{
		//  saves to the database using key/value
		localStorage.setItem('name', 'Hello World!'); 
	} 
	catch (e) 
	{
		if (e == QUOTA_EXCEEDED_ERR)
		{
			//  data wasn’t successfully saved due to quota exceed so throw an error
			alert('Quota exceeded!'); 
		}
	}

	//  Write out the item from local storage:
	document.write(localStorage.getItem('name')); 

	//deletes the matching item from the database
	localStorage.removeItem('name'); 
}