javascript Regex to have atmost 5 characters in password

Question

I am trying to implement maximum case in JavaScript for password validation.

I have a scenario where in password user should enter maximum 5 characters (a-z,A-Z) and password length having no restriction

Passsword length no limit
except (a-z,A-Z) ,there is no limtation
charcter(a-z,A-Z) will have atmost 5 in password .Not more than that.Sequence doesnot matter.

I tried /[^A-Z,a-z]*(?:[A-Z,a-z][^A-Z,a-z]*){0,5}/

But it is not working. Kindly help

General advice for this sort of thing: Don't try to do it with a single regex, don't try to do every test with regex. — Quentin, Sep 05 '17 at 13:05
He wants the passwort to be as long as the user wants but has less or equal than 5 charaters [a-zA.Z]. — Bellian, Sep 05 '17 at 13:10
I need a regex to test my "password" to contain max 5 alphabet(a-z,A-Z) in any sequence.user can input other things in any number and sequence — Sudhanshu Agarwal, Sep 05 '17 at 13:20

score 0 · Answer 1 · answered Sep 05 '17 at 13:05

Did you even search? It is obviously, that this is a duplicate.

See

score 0 · Answer 2 · answered Sep 05 '17 at 13:05

0

You can just count how many characters you have in the password like so:

if(password.match(/[a-zA-Z]/g).length > 5){ /* reject */ }

answered Sep 05 '17 at 13:05

Bellian

reject on > 5? Type mismatch? – iquellis Sep 05 '17 at 13:06
@iquellis no, that's exactly the requirement. `charcter(a-z,A-Z) will have atmost 5 in password. Not more than that.` – Thomas Sep 05 '17 at 13:16
Oops, yes, you are right. Was thinking of password policy or sth. like that. – iquellis Sep 05 '17 at 13:17
This is a regex flag. `g` is the global flag and allows you to find all matches instad of just one. (see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp) – Bellian Sep 06 '17 at 08:01

score 0 · Answer 3 · answered Sep 05 '17 at 13:07

0

You can use the below regex for password validation.

((?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[@#$%]).{5,20})

It validates :

answered Sep 05 '17 at 13:07

I need a regex to test my "password" to contain max 5 alphabet(a-z,A-Z) in any sequence.user can input other things in any number and sequence .Can i get specific regex instead of in combination – Sudhanshu Agarwal Sep 05 '17 at 13:20
Can you tell some example how your password would look like?@SudhanshuAgarwal – Sep 06 '17 at 06:21

score 0 · Answer 4 · answered Sep 05 '17 at 13:10

0

Break it down and solve it step by step

Alphabet only - define your character set

/[A-Za-z]/

Maximum length of 5 - use a quantifier

/[A-Za-z]{0,5}/

Nothing else is allowed - wrap it with ^ and $

/^[A-Za-z]{0,5}$/

answered Sep 05 '17 at 13:10

nvbach91

I need a regex to test my "password" to contain max 5 alphabet(a-z, A-Z) in any sequence.user can input other things in any number and sequence.Can i get specific regex for my requirement?This will only test string which are having max 5 characters, no other input.But in my case max 5 character with any number or sequence of other input – Sudhanshu Agarwal Sep 05 '17 at 13:23
Sorry mate, I didn't understand your question at first. Bellian's solution is the best one but you need to do one more check in case password.match(/[a-zA-Z]/g) returns null when it doesn't find any a-zA-Z character in the password – nvbach91 Sep 06 '17 at 18:12

4 Answers4