Regular expressions for password validation

Question

I need to validate a password that matches the following criteria:

• minimum 8 characters
• contain a combination of numbers and letters
• must not enforce special characters

The follow regular expression is what I came up with:

^{8,}.(?=*\d)(?=.*[a-zA-Z])&

but this is failing on:

• !password1
• password1
• Password1

From what I can gather, trying to investigate RegEx, {8,} means minimum of 8 and don't care about the maximum, \d specifies digits, whitespaces and special characters. The a-z makes sense.

Answer 1

Try:

^(?=.*\d)(?=.*[a-zA-Z]).{8,}$

See it @work