checking regular expression for . and /

I want regular expression for checking whether a word has . or / like abcd. or abcd/a or abcd.def or abcd/def. Any help 开发者_StackOverflow中文版will be gr8!

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/[\/\.]/

Usage

if "some test. string" =~ /[\/\.]/
   # ..
end

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Both / and . are reserved characters in regex, so you would normally need to escape them. The exception to this is that . doesn't need to be escaped when it's in a character class, which is how you'd want to search in this case.

The escape chararacter in regex is \, so your / character becomes \/. Your . remains as it is.

Therfore, to check if a string contains either a / or a ., you would need a regex that looks something like this:

/[.\/]/

This will check any string and return true if it contains either of these characters anywhere within the string, regardless of what else is in the string.

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/(\.|\/)/ matches the period or slash to a group.

/[\/\.]/ just matches for period, slash or both.