Useful Regex

Email

^([a-z.-_]+)@(([a-z]+)(.[a-z]{2,4}))$

Website

^http[s]?:\/\/([a-z0-9-]+)?.?(([a-z-]+).[a-z0-9]{2,4})$

URL

^http[s]?:\/\/([a-z0-9-]+)?.?(([a-z-]+).[a-z0-9]{2,4})([a-z0-9\/]+)$

File Name

^([a-zA-Z0-9-\s_]+).([a-z]{1,5})$

Mobile Number

Bangladeshi Mobile Number

^(\+88)?01[356789][0-9]{8}$

Bangladeshi Vehicle Registration

^[a-zA-Z\s]+\s-\s[A-Z]{2,3}\s[0-9]{2}-[0-9]{4}$