Regex for whole numbers only and not a blank string

Question

Please can you help me, I need a regex expressions to only allow whole numbers and the string cannot be blank.

Thanks

Have you tried searching here? – John Dvorak Mar 05 '13 at 12:28 — John Dvorak, Mar 05 '13 at 12:28

score 5 · Answer 1 · answered Mar 05 '13 at 12:27

5

/^-?\d+$/

This regex would match one or more digits. So won't allow blank as required, and would only allow whole numbers
Actually the + after \d imposes that at least one digit be present in the input string.
The - in the beginning checks for a -, and the following ? makes it optional.

answered Mar 05 '13 at 12:27

Ali Shah Ahmed

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oops i forgot that. let me make an amendment to my answer – Ali Shah Ahmed Mar 05 '13 at 12:29
i have made changes to my answer. hope it helps – Ali Shah Ahmed Mar 05 '13 at 12:30

pierroz · Answer 2 · 2013-03-05T12:32:13.663

1

You should try this one:

^\d+$

^ : begining of the string to capture
$ : end of the string to capture
\d : all the digits (equivalent to [0-9])
+ : at least one of the class

edited Mar 05 '13 at 12:32

answered Mar 05 '13 at 12:26

pierroz

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Regex for whole numbers only and not a blank string

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