Сергей Соколов

- console.log(data.data.values)
+ console.log(data.values)

(arr => Object.fromEntries(['a', 'b', 'c'].map((p, i) => [p, arr[i]])))([1, 2, 3])
// Object { a: 1, b: 2, c: 3 }

// или так, что чуть короче, но такой же фарс
(arr => Object.fromEntries(Array.from('abc', (p, i) => [p, arr[i]])))([1, 2, 3])

const findRangeKey = (keysArray, keyString) => {
  const num = Number(keyString);
  if (keysArray.includes(keyString)) {
    // exact match
    return keyString;
  }

  return keysArray.find(key => {
    const [min, max] = key.split('-').map(Number);
    if (max !== undefined) {
      return num >= min && num <= max;
    }

    return num === min;
  });
};

findRangeKey(['10', '20-40'], 30); // "20-40"
findRangeKey(['10', '20-40'], 20); // "20-40"
findRangeKey(['10', '20-40'], 10); // "10"

const data = {
  '10': {
    '5-15': {
      title: '10-5-15',
    }
  },
  '20-60': {
    '5': { title: '20-60-5' },
    '10': { title: '20-60-10' },
    '20-40': { title: '20-60-20-40' },
  },
};

const getTitle = (data, a, b) => {
  const aKey = findRangeKey(Object.keys(data), a);
  if (!aKey) {
    return null;
  }

  const bKey = findRangeKey(Object.keys(data[aKey]), b);
  if (!bKey) {
    return null;
  }

  return data[aKey][bKey].title;
};

console.log(getTitle(data, '10', '5')); // "10-5-15"
console.log(getTitle(data, 40, 30)); // "20-60-20-40"

const keys = ['key1', 'key2', 'key3'];
const values = ['value1', 'value2', 'value3', 'value4', 'valu5', 'value6'];

const makeGen = function*(arr) {
  let index = 0;
  const { length } = arr;
  
  while (true) {
    yield arr[index++ % length];
  }
}

const keyGen = makeGen(keys);
const valGen = makeGen(values);
const length = Math.max(keys.length, values.length);

const result = Array.from({ length }, () => [keyGen.next().value, valGen.next().value]);

console.log(JSON.stringify(result, null, 2));

/*
[
  [
    "key1",
    "value1"
  ],
  [
    "key2",
    "value2"
  ],
  [
    "key3",
    "value3"
  ],
  [
    "key1",
    "value4"
  ],
  [
    "key2",
    "valu5"
  ],
  [
    "key3",
    "value6"
  ]
]
*/

- elem.fadeOut();
+ $('selector').fadeOut();