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karan karan
Web Development Techdegree Student 12,697 PointsDefine length for password
How to define length for password, That this should be at least the length of the password? I tried looking up online for this, but did not get it
^(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).*$
can somebody explain this,
1 Answer
Brian Jensen
Treehouse StaffHiya karan karan
This RegEx that you added to your post, is checking if there is at least one of each of a lowercase letter, uppercase letter and a number:
/^(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).*$/
If you wanted to also add a minimum and maximum password length, you can use a Quantifier. For example if you wanted the password to have a minimum length of 8 characters and a maximum of 20, as well as still ensuring that there is at least one of each of a lowercase letter, uppercase letter and a number, you would change the RegEx to this:
/^(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{8,20}$/