массив объектов без BASKET
[{"BASKET_ID":338466,"BASE_PRICE":2700,"PRICE":2700,"DISCOUNT":0},{"BASKET_ID":338467,"BASE_PRICE":2800,"PRICE":2800,"DISCOUNT":0},{"BASKET_ID":338468,"BASE_PRICE":2800,"PRICE":1400,"DISCOUNT":1400}]
for (let index = 0; index < data.length; ++index) {
console.log(data[index]);
}
выдает