I have two different things password and pin. I'm looking for RegEx formate for both like below -:
Password -:
- 1 Capital latter
- 1 Small latter
- 1 Special character
- Min 8 digits
- 3 time can't repeat any thing.
I have achieved 4 points by
let reg = "^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])(?=.*[!@#\$%\^&\*])(?=.{8,})"but i'm not able to achieve 5th one.
PIN
1. 6 digit pin
2. Only numbers
3. Can't be use simple pin (111111,222222,...00000 and 123456, 234567 ....654321)
You may use this regex with an additional negative lookahead to disallow 3 or more repeats of any character:
^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])(?=.*[!@#$%^&*])(?!.*?(.)(?:.*?\1){2}).{8,}$
Take note of this additional negative lookahead:
(?!.*?(.)(?:.*?\1){2})
This will fail the match if we find 3 or more repeats of a character anywhere in input.
Complete regex details:
^: Start(?=.*[a-z]): Positive lookahead to assert that we must have a small letter(?=.*[A-Z]): Positive lookahead to assert that we must have an uppercase letter(?=.*[0-9]): Positive lookahead to assert that we must have a digit(?=.*[!@#$%^&*]): Positive lookahead to assert that we must have a special character(?!.*?(.)(?:.*?\1){2}): Negative lookahead to assert that we must not 3 or more repeats of same character.{8,}: Match 8 or more characters$; End