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phudgins/whitespace_bye_bye.rb

Created January 9, 2012 20:14
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Remove whitespace from HTML tags with only whitespace
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whitespace_bye_bye.rb
str = "<strong> </strong> <p> Hello dere! </p> <ul> <li> </li> <li> I am list </li> </ul>"
# Remove only whitespace
str.gsub(/((<[^>\/]+>)(\s+)(<\/[^>\/]+>))/, '\2\4')
#=> "<strong></strong> <p> Hello dere! </p> <ul> <li></li> <li> I am list </li> </ul>"
# Remove tags that contain only whitespace
str.gsub(/\s*<[^>\/]+>\s+<\/[^>\/]+>\s*/, '')
#=> "<p> Hello dere! </p> <ul><li> I am list </li> </ul>"
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