extract links (URLs), with nokogiri in ruby, from a href html tags?

Answer 1

You can do it like this:

doc = Nokogiri::HTML.parse(<<-HTML_END)
<div class="heat">
   <a href='http://example.org/site/1/'&gt;site 1</a>
   <a href='http://example.org/site/2/'&gt;site 2</a>
   <a href='http://example.org/site/3/'&gt;site 3</a>
</div>
<div class="wave">
   <a href='http://example.org/site/4/'&gt;site 4</a>
   <a href='http://example.org/site/5/'&gt;site 5</a>
   <a href='http://example.org/site/6/'&gt;site 6</a>
</div>
HTML_END

l = doc.css('div.heat a').map { |link| link['href'] }

This solution finds all anchor elements using a css selector and collects their href attributes.

Answer 2

ok this code works perfect for me, thanks to sris

p doc.xpath('//div[@class="heat"]/a').map { |link| link['href'] }