Tintin81
Reputation: 10207
Is there a Regular Expression for blank input?
This might be a silly question but is there a Regular Expression to validate for blanks or no user input at all?
Upvotes: 3
Views: 13725
Answers (2)
Pavel Anossov
Reputation: 62908
Start of line immediately followed by end of line:
^$
Any amount of whitespace, including none:
^\s*$
Upvotes: 9
alecxe
Reputation: 473873
^$ should do the trick. ^ matches the beginning and $ the end of the string.
Upvotes: 4
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