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I'm looking for a regex pattern that matches the following values:

  • an empty string, or
  • a string that contains only spaces.

Thanks

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1 Answer 1

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3

You could use this regex:

/^\s*$/

Start of string 
Followed by zero or more whitespace 
End of string
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1 Comment

+1 for being faster (accursed minimum-character count hold-up..!), and explaining.

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