How do I remove a node with Nokogiri?_问答_开发者

开发者 https://www.devze.com 2022-12-10 20:39 出处：网络

How can I remove <img> tags using Nokogiri? I have the following code but it wont work: # str = \'<img src=\"canadascapital.gc.ca/data/2/rec_imgs/5005_Pepsi_H1NB.gif\"/…; testt开发者_如何学

相关专题：nokogiri ruby

How can I remove <img> tags using Nokogiri?

I have the following code but it wont work:

# str = '<img src="canadascapital.gc.ca/data/2/rec_imgs/5005_Pepsi_H1NB.gif"/…; testt开发者_如何学运维<a href="#">test</a>tfbu' 

f = Nokogiri::XML.fragment(str)
f.search('//img').each do |node| 
  node.remove
end
puts f

have a try!

f = Nokogiri::XML.fragment(str)

f.search('.//img').remove
puts f

I prefer CSS over XPath, as it's usually much more readable. Switching to CSS:

require 'nokogiri'

doc = Nokogiri::HTML('<html><body><img src="foo"><img src="bar"></body></html>')

After parsing the document looks like:

doc.to_html
# => "<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\" \"http://www.w3.org/TR/REC-html40/loose.dtd\">\n<html><body>\n<img src=\"foo\"><img src=\"bar\">\n</body></html>\n"

Removing the <img> tags:

doc.search('img').each do |src|
  src.remove
end

Results in:

doc.to_html
# => "<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\" \"http://www.w3.org/TR/REC-html40/loose.dtd\">\n<html><body></body></html>\n"