html password regular expression validation

Question

I need to validate password with these requirements:-

And got stucked a bit, here's what I have so far.

<form>
Password <input type="text" pattern="/^[a-zA-Z0-9!@#\$%\^\&*_=+-]{8,12}$/g" />
<input type="submit" value="Submit" />
</form>

I hope you’re not using that for anything in the real world? Those password requirements are pretty silly. Anyways, don’t use delimiters; remove the / at the beginning of the pattern and the /g at the end. — Ry-
– Ry- ♦, Commented Jan 16, 2015 at 2:37

alpha bravo · Accepted Answer · 2015-01-16 03:03:51Z

25

try this pattern

^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])(?=.*[!@#$%^&*_=+-]).{8,12}$

answered Jan 16, 2015 at 3:03

alpha bravo

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2 Comments

Nice use of lookahead!

Thanks! am not very good in regex and thanks for sharing such awesome website as well.