I have a json array say

{
   "People": {
       "Person": [
          {"FirstName": "John", "LastName": "Smith"}
          {"FirstName": "Joe", "LastName": "Bloggs"}
          {"FirstName": "Wendy", "LastName": "Deng"}
        ]
    }
}

And I want to convert this into a javascript array (something like this)

var persons = [ ["FirstName", "John", "LastName", "Smith"], ["FirstName", "Joe", "LastName", "Bloggs"], ["FirstName", "Wendy", "LastName": "Deng"] ];

How do I accomplish this? Hope my question makes sense and I realise the javascript array initialization may not be the correct way to put it.

Thanks.