CODEWITHSUNDEEP
javascriptregex
praveenjayapal
praveenjayapal

Reputation: 38529

Regular expression for allow only numbers

I want to check the following with regular expression

{Today,Format}

Today - will be remains as it is. In the place of Format, we can allow the digits from 0 to 12.

for example: we have to allow

{Today,0}
{Today,1}
{Today,2}
...
{Today,12}

and also have to allow 

{Today,}
{Today,Format}

Please help me and also refer me to some site to develop my regular expression skills.

Upvotes: 0

Views: 10216

Answers (4)

Adriana
Adriana

Reputation: 8604

This is a short cheat sheet to regex.

Upvotes: 0

Yaser Sulaiman
Yaser Sulaiman

Reputation: 3351

You might also find this list of regular expression software quite useful. Rubular is my favorite.

Upvotes: 0

cletus
cletus

Reputation: 625007

\{Today,(\d|1[012]|Format)?\}

Meaning:

  • Open curly brace;
  • 'Today,';
  • Optionally one of the following: a digit (0-9), 1 followed by 0, 1 or 2 (10,11,12), 'Format'; and then
  • Close curly brace.

As for resources I can recommend this site on regular expressions and the book Mastering Regular Expressions.

Upvotes: 18

flesh
flesh

Reputation: 23935

txt2re.com is a brilliant web-based regex generator...

Upvotes: 4

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