Can you search html attributes using wildcards with ruby nokogiri

问题

I know you can search text in html using wildcards. Can you search for attribute values in html using wildcards with nokogiri

e.g., suppose I want to search for classes with value *session*

回答1:

You can use xpath contains() function to search the document. Something like:

doc.xpath("//*[@*[contains(., 'session')]]").each do |ele|
  # something
end

This search returns all the elements with any attribute whose value contains the string 'session'.

回答2:

Had a similar problem few days ago - notice spaces around class values.

find(:xpath, "//*[contains(concat(' ', normalize-space(@class), ' '), ' icon-edit ')]")

来源：https://stackoverflow.com/questions/11593489/can-you-search-html-attributes-using-wildcards-with-ruby-nokogiri