def javascripts_from_page(pattern, page = nil)
      xpath_pattern_from_page('//script', pattern, page) do |match, node|
        yield match, node if block_given?
      end
    end
def javascripts_from_page(pattern, page = nil)
      xpath_pattern_from_page('//script', pattern, page) do |match, node|
        yield match, node if block_given?
      end
    end
@param [ Regexp ] pattern
 @param [ Typhoeus::Response, String ] page

 @return [ Array<Array<MatchData, Nokogiri::XML::Element>> ]
 @yield  [ MatchData, Nokogiri::XML::Element ]