Array of JSON objects are stored in HTML5 localStorage
.
For now delimiter is ;
For accessing and modifying array of object
You can use parse and stringify if the array isn't too big, but if it is, then you'll be re-encoding the whole data set for every little change.
The library at http://rhaboo.org improves on that by giving each array entry its own localStorage entry in a linked list. That means you can make changes quite efficiently. Unlike JSON, it also honours text-named properties and three different types of sparse entry (null, undefined and simply not there.)
BTW, I wrote rhaboo.