title: How to better structure an Array of Arrays in JSON
body: <p>In the following JSON object:</p>
  
  <pre><code>var employees = { "accounting" : [   // accounting is an array in employees.
                                  { "firstName" : "John",  // First element
                                    "lastName"  : "Doe",
                                    "age"       : 23 },
  
                                  { "firstName" : "Mary",  // Second Element
                                    "lastName"  : "Smith",
                                    "age"       : 32 }
                                ], // End "accounting" array.                                  
                "sales"       : [ // Sales is another array in employees.
                                  { "firstName" : "Sally", // First Element
                                    "lastName"  : "Green",
                                    "age"       : 27 },
  
                                  { "firstName" : "Jim",   // Second Element
                                    "lastName"  : "Galley",
                                    "age"       : 41 }
                                ] // End "sales" Array.
              } // End Employees
  </code></pre>
  
  <p>How do I restructure the object so I can access each employee first name like this:</p>
  
  <pre><code>employees[0].firstName
  employees[1].firstName
  // etc
  </code></pre>