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How do I remove a node with Nokogiri?

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面向向阳花
面向向阳花 2020-12-14 05:14

How can I remove tags using Nokogiri?

I have the following code but it wont work:

# str = \'
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  • 难免孤独
    2020-12-14 06:05

    have a try!

    f = Nokogiri::XML.fragment(str)

f.search('.//img').remove
puts f
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  • 太阳男子
    2020-12-14 06:21

    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"
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