creating a password regex (javascript)

Question

I am trying to create a password regex that:

This is what I have tried so far:

/^([A-Z][\d])([#@*]{1})([A-Za-z0-9]+)([\d]{3})$/

The problem with this so far is that it is only allowing a special character to come after the number.

For example: It allows A4#Fgf344 but not A4Fg#f344.

This has been asked about a hundred times on SO--did you look? Also, please tell your boss/client that these kinds of rules are **really, really** stupid and obnoxious. — , Mar 02 '15 at 19:21
possible duplicate of [Regexp Java for password validation](http://stackoverflow.com/questions/3802192/regexp-java-for-password-validation) — , Mar 02 '15 at 19:21
I'm voting to close this question as off-topic because these kinds of password restrictions are dangerous. — Evan Davis, Mar 02 '15 at 19:23
I am trying to learn how to use regex properly, it is not for a client or some kind of company, just for my own personal gain — user2538755, Mar 02 '15 at 19:29
Understanding you are simply just trying to learn more on regex (which can be tricky, good luck!), I still have to recommend for you to never store password information within a JavaScript file - we can retrieve it easily. If you have a database (MySql for example), start by looking into md5 hashing via PHP. — , Mar 02 '15 at 19:47

score 0 · Accepted Answer · answered Mar 02 '15 at 19:22

0

^(?=[^#@*]*[#@*][^#@*]*$)([A-Z][\d])([A-Za-z0-9#@*]+)([\d]{3})$

Try this.This should do it.See demo.

answered Mar 02 '15 at 19:22

vks

thank you @vks. This is helpful. I still don't have a clear understanding of look around, but in all this was helpful. – user2538755 Mar 02 '15 at 19:36

score 0 · Answer 2 · answered Mar 02 '15 at 19:33

0

You can use this regex:

/^[A-Z]\d(?=.*?[#@*]).{3,}\d{3}$/gm

answered Mar 02 '15 at 19:33

anubhava

2 Answers2