问题
If I have a bunch of elements like:
<p>A paragraph <ul><li>Item 1</li><li>Apple</li><li>Orange</li></ul></p>
Is there a built in nokogiri method that would get me all, for example, p elements that contain the text "Apple"? (the example element above would match, for instance).
回答1:
Nokogiri can do this (now) using jQuery extensions to CSS:
require 'nokogiri'
html = '
<html>
<body>
<p>foo</p>
<p>bar</p>
</body>
</html>
'
doc = Nokogiri::HTML(html)
doc.at('p:contains("bar")').text.strip
=> "bar"
回答2:
Here is an XPath that works:
require 'nokogiri'
doc = Nokogiri::HTML(DATA)
p doc.xpath('//li[contains(text(), "Apple")]')
__END__
<p>A paragraph <ul><li>Item 1</li><li>Apple</li><li>Orange</li></ul></p>
Hope that helps
回答3:
You can also do this very easily with Nikkou:
doc.search('p').text_includes('bar')
回答4:
Try using this XPath:
p = doc.xpath('//p[//*[contains(text(), "Apple")]]')
来源：https://stackoverflow.com/questions/1474688/nokogiri-how-to-select-nodes-by-matching-text