Regular expressions 8 pattern

留在这里 省着忘了

1. Match Username

/^[a-z0-9_-]{3,16}$/ 

2. Match Password

/^[a-z0-9_-]{6,18}$/ 

3. Match Hex Value

/^#?([a-f0-9]{6}|[a-f0-9]{3})$/ 

4. Match a slug

/^[a-z0-9-]+$/ 

5. Match a email

/^([a-z0-9_\.-]+)@([\da-z\.-]+)\.([a-z\.]{2,6})$/  

6. Match a http url

/^(https?:\/\/)?([\da-z\.-]+)\.([a-z\.]{2,6})([\/\w \.-]*)*\/?$/ 

7. Match IP Address

/^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/ 

8. Match a Http tag

/^ < ([a-z]+)([^ < ]+)*(?: > (.*) < \/\1 > |\s+\ /> )$/