HTML5 验证问题

Question

I'm trying to validate input using HTML5 pattern tag. Have 3 separate input checks:

• upper or lower case characters from ae range, 1 character limit [A-Ea-e]{1} For example: A, B, e ...
• only numbers and comma. Comma is not first or last character of string. [0-9]+,*[0-9]+ For example: 0,52356, 0677,67 ...
• upper or lower case characters from ae range, 1 character limit [A-Ea-e]{3} for example: AbE, cDa

I want to add to all of this samples or * sign with 1 char limit condition.

For every check that listed above there might be 1 * sign which is also accepted. But if there is * sign, adding more characters must end with invalid result.

I'm new to regex. Can not figure out.

Any suggestions?

Answer 1

^([A-Ea-e]{1}|[0-9]+(,[0-9]+)*|[A-Ea-e]{3})\*?$

Valid:

A
AAA
1
1,2
1,2,3
A*
AAA*
1*
1,2*
1,2,3*

Invalid:

AA
AAAA
,1
1,
1,**

If you want them separate:

^[A-Ea-e]{1}\*?$
^[0-9]+(,[0-9]+)*\*?$
^[A-Ea-e]{3}\*?$