Accumulative without looping?

JavaScript
1

How is this possible?
Instructions: Return total number of dates included in the dataset.

var store3 = [{
    'date': '2015-01-06',
    'inventory sold': {
        'Dark Chocolate Crunchies': {
            'cost': 4.29,
            'quantity': 1
        },
        'Mint Wafers': {
            'cost': 1.09,
            'quantity': 0
        },
        'Peppermint Poppers': {
            'cost': 2.38,
            'quantity': 3
        },
        'Peanut Butter Buttered Peanuts': {
            'cost': 1.79,
            'quantity': 2
        },
        'Berry Bites': {
            'cost': 7.89,
            'quantity': 0
        },
        'Caramel Twists': {
            'cost': .50,
            'quantity': 0
        },
        'Banana Bunches': {
            'cost': 4.53,
            'quantity': 1
        }
    }
}, {
    'date': '2015-01-07',
    'inventory sold': {
        'Dark Chocolate Crunchies': {
            'cost': 4.29,
            'quantity': 0
        },
        'Mint Wafers': {
            'cost': 1.09,
            'quantity': 2
        },
        'Peppermint Poppers': {
            'cost': 2.38,
            'quantity': 1
        },
        'Peanut Butter Buttered Peanuts': {
            'cost': 1.79,
            'quantity': 0
        },
        'Berry Bites': {
            'cost': 7.89,
            'quantity': 3
        },
        'Caramel Twists': {
            'cost': .50,
            'quantity': 7
        },
        'Banana Bunches': {
            'cost': 4.53,
            'quantity': 1
        }
    }
}, {
    'date': '2015-01-08',
    'inventory sold': {
        'Dark Chocolate Crunchies': {
            'cost': 4.29,
            'quantity': 1
        },
        'Mint Wafers': {
            'cost': 1.09,
            'quantity': 1
        },
        'Peppermint Poppers': {
            'cost': 2.38,
            'quantity': 0
        },
        'Peanut Butter Buttered Peanuts': {
            'cost': 1.79,
            'quantity': 0
        },
        'Berry Bites': {
            'cost': 7.89,
            'quantity': 0
        },
        'Caramel Twists': {
            'cost': .50,
            'quantity': 2
        },
        'Banana Bunches': {
            'cost': 4.53,
            'quantity': 0
        }
    }
}, {
    'date': '2015-01-09',
    'inventory sold': {
        'Dark Chocolate Crunchies': {
            'cost': 4.29,
            'quantity': 0
        },
        'Mint Wafers': {
            'cost': 1.09,
            'quantity': 3
        },
        'Peppermint Poppers': {
            'cost': 2.38,
            'quantity': 2
        },
        'Peanut Butter Buttered Peanuts': {
            'cost': 1.79,
            'quantity': 1
        },
        'Berry Bites': {
            'cost': 7.89,
            'quantity': 0
        },
        'Caramel Twists': {
            'cost': .50,
            'quantity': 0
        },
        'Banana Bunches': {
            'cost': 4.53,
            'quantity': 1
        }
    }
}, {
    'date': '2015-01-10',
    'inventory sold': {
        'Dark Chocolate Crunchies': {
            'cost': 4.29,
            'quantity': 2
        },
        'Mint Wafers': {
            'cost': 1.09,
            'quantity': 1
        },
        'Peppermint Poppers': {
            'cost': 2.38,
            'quantity': 0
        },
        'Peanut Butter Buttered Peanuts': {
            'cost': 1.79,
            'quantity': 2
        },
        'Berry Bites': {
            'cost': 7.89,
            'quantity': 5
        },
        'Caramel Twists': {
            'cost': .50,
            'quantity': 7
        },
        'Banana Bunches': {
            'cost': 4.53,
            'quantity': 2
        }
    }
}];

function accessesingData3() {

}
2

Wouldn’t all of the objects in the array include a date? If so, you could just return the length of the array.

If for some reason some of the objects won’t have dates, you could .filter() first for objects that have dates in them, then return the length of the filtered array

1 Like
3

It can’t just be return store3.length

Is it? It’s expecting to return 5.

4

That array has five objects in it, so it checks out.