Regex allow asterisk(*) only once time and in the end

Question

I want to pass only the strings like this:

abc*
123*
abc 123*
abc-123abc*

I don't want to pass strings like those:

 - abc**
 - abc*123
 - *abc

The asterisk must be in the end and only once time.

With the regex like \* I get all asterisk, but i dont klnow how i specified. I am not so good in regex.

Answer 1

You can use

^[^*]*\*$

Note it will also match a * string. If there must be at least two chars, replace the [^*]* part with [^*]+ to match one or more chars other than * before the final *.

See the regex demo. Details:

• ^ - start of a string
• [^*]* - zero or more chars other than *, as many as possible (greedily)
• \* - a * char
• $ - at the end of string.