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How can we check the string is HTML or not using Ruby?
If string contains html tag then returns true otherwise false
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If string contains html tag then returns true otherwise false
This test ("string contains <html>") is not sufficient to determine whether a string is HTML.
How can we check the string is HTML or not using Ruby?
The excellent Nokogiri gem provides HTML validation.
$ gem install nokogiri
require 'nokogiri'
Nokogiri::HTML.parse("<foo>bar</foo>").validate
# => [#<Nokogiri::XML::SyntaxError...>, ...]
If you just want to see if a fragment of html is correct without validating tags:
Nokogiri::XML("<foo>bar</foo>").errors.empty?
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