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Nokogiri

Nokogiri is a simple HTML / XML parser with much of it’s interface borrowed from Hpricot. It uses libxml2 to parse and search, so it is very fast.

Learn how to Generate HTML.

Here is how to parse HTML:

require 'nokogiri'
doc = Nokogiri::HTML.parse(<<-eohtml)



  


    Hello World


    
This is an awesome document


I am a paragraph
I am a link



eohtml
####

	
Search for nodes by css

doc.css(‘p > a’).each do |a_tag|

  puts a_tag.content

end

####

	
Search for nodes by xpath

doc.xpath(‘//p/a’).each do |a_tag|

  puts a_tag.content

end

####

	
Or mix and match.

doc.search(‘//p/a’, ‘p > a’).each do |a_tag|

  puts a_tag.content

end

###

	
Find attributes and their values

doc.search(‘a’).first[‘href’]