Чтобы получить более четкую интерпретацию вашего bakery
объекта, я немного его подправил
var bakery = {
"items":[
{
"id": "0001",
"type": "donut",
"name": "Cake",
"ppu": 0.55,
"batters":[
{ "id": "1001", "type": "Regular" },
{ "id": "1002", "type": "Chocolate" },
{ "id": "1003", "type": "Blueberry" },
{ "id": "1004", "type": "Devil's Food" }
],
"toppings":[
{ "id": "5001", "type": "None" },
{ "id": "5002", "type": "Glazed" },
{ "id": "5005", "type": "Sugar" },
{ "id": "5007", "type": "Powdered Sugar" },
{ "id": "5006", "type": "Chocolate with Sprinkles" },
{ "id": "5003", "type": "Chocolate" },
{ "id": "5004", "type": "Maple" }
]
},
{
"id": "0002",
"type": "donut",
"name": "Cake",
"ppu": 0.65,
"batters":[
{ "id": "1001", "type": "Regular1" },
{ "id": "1002", "type": "Chocolate1" },
{ "id": "1003", "type": "Blueberry1" },
{ "id": "1004", "type": "Devil's Food1" }
],
"toppings":[
{ "id": "5001", "type": "None1" },
{ "id": "5002", "type": "Glazed1" },
{ "id": "5005", "type": "Sugar1" },
{ "id": "5007", "type": "Powdered Sugar1" },
{ "id": "5006", "type": "Chocolate with Sprinkles1" },
{ "id": "5003", "type": "Chocolate1" },
{ "id": "5004", "type": "Maple1" }
]
},
...
...
...
...
]
}
Теперь вы можете перебирать каждый элемент и строить свой массив target
следующим образом
var target = [];
// define reducer function for each item in bakery.items
const reduceToTarget = item => {
var obj = {};
obj.id = item.id;
obj.type = item.type;
obj.name = item.name;
obj.ppu = item.ppu;
obj.batters = '';
item.batters.forEach(b => obj.batters+=b.type+'|');
obj.ingredients = item.toppings;
target.push(obj);
}
// Now you can call the reduceToTarget function to get the desired target list/array
bakery.items.forEach(reduceToTarget);
Вывод для этого выглядит примерно так
target = [
{
id: "0001"
type: "donut"
name: "Cake"
ppu: 0.55
batters: "Regular|Chocolate|Blueberry|Devil's Food|",
ingredients : [/* list of ingredients*/]
},
{
id: "0002"
type: "donut"
name: "Cake"
ppu: 0.65
batters: "Regular|Chocolate|Blueberry|Devil's Food|",
ingredients : [/* list of ingredients*/]
}
]
ПРИМЕЧАНИЕ:
Для получения countOfFillings
вы можете просто вызвать функцию length()
на вашем ingredients
список для любого элемента в target