Yuriy Vorobyov

data.find(el => el.item === 'geovishap-hatchling') // => {id: 'enemies', item: 'geovishap-hatchling'}
data.find(el => el.item === 'geovishap-hatchling-3') // => undefined

data.findIndex(el => el.item === 'geovishap-hatchling') // => индекс элемента
data.find(el => el.item === 'geovishap-hatchling-3') // => -1

myClients = [];
wss.on('connection', function(ws) {
    myClients.push(ws);
});

// сделать 1 функцию
  const popupTitle = advertElement.querySelector('.popup_title');
  popupTitle.textContent = offer.title;

const poputTitleContent = title => {
  const popupTitle = advertElement.querySelector('.popup_title');
  popupTitle.textContent = title;
};

function poputTitleContent(title) {
  const popupTitle = advertElement.querySelector('.popup_title');
  popupTitle.textContent = title;
}

similarOffers.map(({author, offer}) => {

  poputTitleContent(offer.title);

  // ... остальной код

};

const a = [1, 2, 1, 2, 3, 1, 1, 2, 3];
const d = [];

for (let i = 0; i < a.length; i++) {
  a[i] === 1 ? d.push([1]) : d[d.length - 1].push(a[i]);
}

console.log(d); // [ [ 1, 2 ], [ 1, 2, 3 ], [ 1 ], [ 1, 2, 3 ] ]

const a = [1, 2, 1, 2, 3, 1, 1, 2, 3];
const d = [];

a.map(el => {
  el === 1 ? d.push([1]) : d[d.length - 1].push(el);
});

console.log(d);

const arr = [1, 2, 3, 4];
const str = arr.join('\n');
console.log(str)

1
2
3
4