otdameskapizm

const props = ['b', 'c'];

const newObj = Object
  .entries(obj)
  .filter(([key]) => props.includes(key))
  .reduce((acc, [key, value]) => ({ ...acc, [key]: value }), {});

const searchedValue = 'Тинькофф';

const items = CARDS.flatMap(({ items }) => items);
const [card] = items
  .filter(({ title }) => title.toLowerCase() === searchedValue.toLowerCase());

alert(`Пользователь ввел ${num1} + ${num2} и получил ${sum}`);

const highAndLow = (str) => {
  const nums = str.split(' ').map(((num) => +num));
  const min = Math.min(...nums);
  const max = Math.max(...nums);

  return `Max: ${max}, Min: ${min}`;
};

const result = data.reduce((acc, { value, isValid, field }) => {
  acc[field] = value;
  return {...acc};
}, {});

arayOfSheep.forEach((item) => item===true  count++1);

const countSheeps = function (arr) {
  let counter = 0;
  arr.forEach((sheep) => {
    counter += sheep === true ? 1 : 0;
  });
  return counter;
};

const elems = document.querySelectorAll('[data-id="mydata"]');
elems.forEach((elem, index) => {
  const attrValue = elem.dataset.id;
  const newAttrValue = `${attrValue}${index + 1}`;
  elem.setAttribute('data-id', newAttrValue);
});

const func = (obj) => obj.create();
list.map(func)

const checkboxes = document.querySelectorAll('[name="firstChecks[]"]');
checkboxes.forEach((elem) => {
  elem.addEventListener('change', (event) => {
    // Здесь логика
  });
});