Hexadecimal Color
colorhexadecimal
^#([a-fA-F0-9]{6}|[a-fA-F0-9]{3})$
-> Usage:
#FFF1 ✗
#FFF ✓
#FFF000 ✓
...IPv4
ipv4networking
^((25[0-5]|2[0-4]\d|1\d{2}|\d{1,2})\.){3}(25[0-5]|2[0-4]\d|1\d{2}|\d{1,2})$
-> Usage:
123.300.0.101 ✗
127.0.0.1 ✓
192.168.0.1 ✓
...Unintentional Duplication
duplication
\b(\w+)\s+\1\b
-> Usage:
I need to finish this task ✗
I need to to finish this task ✓
...Whitespace Trimmer
trim
^\s+|\s+$
-> Usage:
(don't account for the quotation marks, it just to visualize whitespace)
"Hello World" ✗
" Hello World" ✓
"Hello World " ✓
" Hello World " ✓
...Email Address
email
^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$
-> Usage:
example.name@domain.com.ru ✓
name.surname@gmail.com ✓
...Strong Password
password
^(?=.*[A-Z])(?=.*[a-z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{12,}$
-> Usage:
longpassword ✗
longpassw0rd ✗
longp@ssw0rd ✗
Longp@ssw0rd ✓
...