Как ограничить количество итераций цикла for

Question

Как ограничить количество итераций цикла for

Рейтинг: -3Ответов: 1Опубликовано: 12.01.2023

Подскажите пожалуйста, как можно из объекта в котором 50 товаров вывести в блок только 4. Используя for(let key in goods)

Ниже пример JSON

    const goods = {
    "10001": {
    "name": "Шорти",
    "cost": 99,
    "size": "L",
    "color": "Black",
    "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
    "image": "images/167433686.jpg"
    },
    "10002": {
        "name": "Шорти",
        "cost": 299,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10003": {
        "name": "Шорти",
        "cost": 199,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10004": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10005": {
        "name": "Шорти",
        "cost": 499,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10006": {
        "name": "Шорти",
        "cost": 599,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10007": {
        "name": "Шорти",
        "cost": 39,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10008": {
        "name": "Шорти",
        "cost": 398,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10009": {
        "name": "Шорти",
        "cost": 397,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10010": {
        "name": "Шорти",
        "cost": 396,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10011": {
        "name": "Шорти",
        "cost": 395,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10012": {
        "name": "Шорти",
        "cost": 394,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10013": {
        "name": "Шорти",
        "cost": 393,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10014": {
        "name": "Шорти",
        "cost": 392,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10015": {
        "name": "Шорти",
        "cost": 391,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10016": {
        "name": "Шорти",
        "cost": 390,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10017": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10018": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10019": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10020": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10021": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10022": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10023": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10024": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10025": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10026": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10027": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10028": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10029": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10030": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10031": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10032": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10033": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10034": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10035": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10036": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10037": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10038": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10039": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10040": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10041": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10042": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10043": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10044": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10045": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10046": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10047": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10048": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10049": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    },
    "10050": {
        "name": "Шорти",
        "cost": 399,
        "size": "L",
        "color": "Black",
        "discription": "Шорты Puma Ess Jersey Shorts 58670601 XL Black",
        "image": "images/167433686.jpg"
    }
    }

javascript

Источник: Stack Overflow на русском

Answer 1

▲ 0Принят

Для прерывания цикл for по условию, необходимо использовать директиву break:

const dataIn = {
  1: 11,
  2: 12,
  3: 13,
  4: 14,
  5: 15,
  6: 16,
};

let j = 0;
for (let i in dataIn) {
  // Что то делаем с данными
  console.log(i, dataIn[i]);
  // Увеличиваем счетчик
  if (++j === 4) break; // прерываем цикл
}

UPD: из комментариев - Для пропуска итераций в цикле используется директива continue

const dataIn = {
  1: 11,
  2: 12,
  3: 13,
  4: 14,
  5: 15,
  6: 16,
};

let j = 0;
for (let i in dataIn) {
  j++;
  if (j < 2) continue; //Пропускаем итерацию
  // Что то делаем с данными
  console.log(i, dataIn[i]);
  // Увеличиваем счетчик
  if (j === 5) break; // Прерываем цикл
}

Как ограничить количество итераций цикла for

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