Why is Nokogiri returning an empty array?

Question

ruby

Good health, dear ones!
I'm trying to parse the hh.ru page, but why it doesn't work, please tell me what I'm doing wrong:

require 'nokogiri'
require 'rubygems'
require 'open-uri'

leaf = 0
count = Array.new
until leaf > 2
  url = "https://rostov.hh.ru/search/vacancy?L_is_autosearch=false&area=113&clusters=true&enable_snippets=true&order_by=publication_time&schedule=remote&page=#{leaf}"
  page = Nokogiri::HTML(open(url))
  element = page.css('div').select { |e| e['class'] == 'vacancy-serp-item' }
  p element
  leaf += 1
  count << links
end

Also, I tried to parse using HTTParty, specifying the same class, but all by.

Answer 1

you can immediately search by the selector, for example: in this way you will have an array of nodes that can already be processed to extract specific information
page.css('div.vacancy-serp-item')