var items = [[['firstName', 'Joe'], ['lastName', 'Blow'], ['age', 42], ['role', 'clerk']], [['firstName', 'Mary'], ['lastName', 'Jenkins'], ['age', 36], ['role', 'manager']]];
var result = [];
// first loop through items
items.forEach(function(item)
{
var obj = {};
// then loop through properties
item.forEach(function (value)
{
// then set property and value
obj[value[0]] = value[1];
});
// once all is done push the object
result.push(obj);
});
console.log(result);