hzzzzl

db.users.find({ 
  _id: { 
    $exists: false 
  } 
})

db.my_database.insert({_id:"this_is_super_unique_id_value", a:1, b:1})

куда парсер отправляет объекты с данными о товарах методом save()

function rangeOfNumbers(startNum, endNum, accumulator = []) {

  accumulator.unshift(endNum)
  
  if (startNum === endNum ) {
    return accumulator;
  }  else  {
    return rangeOfNumbers(startNum, endNum-1, accumulator)
  }

};

new Date(new Date().getTime() + (1000 * 60 * 60 * 24 * 180))

const routes = require('express').Router()

routes.use('/blog', require('./BlogController'))
routes.use('/api', require('./ApiController'))

module.exports = routes

const rgbToHex = (r, g, b) => '#' + [r, g, b].map(x => {
  const hex = x.toString(16)
  return hex.length === 1 ? '0' + hex : hex
}).join('')

console.log(rgbToHex(0, 51, 255)); // '#0033ff'

[1,2,3,4,5,6,7,8].sort((a, b) => Math.random() > 0.5 ? -1 : 1)

images.forEach((img, i) => {
  img.style.display = (i === index - 1) ? 'block' : 'none'
})