Chaudhari tceh Ann

var startDate = new Date(2015-08-04);

        var endDate = new Date(2015-08-12);

        var resultProductData = product_data.filter(function (a) {

            var hitDates = a.ProductHits || {};

            // extract all date strings

            hitDates = Object.keys(hitDates);

            // improvement: use some. this is an improment because .map()

            // and .filter() are walking through all elements.

            // .some() stops this process if one item is found that returns true in the callback function and returns true for the whole expression

            hitDateMatchExists = hitDates.some(function(dateStr) {

                var date = new Date(dateStr);

                return date >= startDate && date <= endDate

            });

            return hitDateMatchExists;

        });

        console.log(resultProductData);