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Visualizaçõesjavascript matching a term that may or may not exist, but should be matching if exist
Here is a string 'dsda[RESP]dasd' The [RESP] may not exist. I like to catch it if exists.
The regexp is /.*(\[RESP\])?.*/ but always fail to catch [RESP]. But if I using /.*(\[RESP\]).*/ It always catch [RESP]
Any way can fix it?
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Juan Pablo Isaza
1 Respostas
Responde à pergunta0
You can use
^(.*?)(?:(\[RESP\])(.*))?$
See the regex demo. Details:
^- start of string(.*?)- Group 1: any zero or more chars other than line break chars as few as possible(?:(\[RESP\])(.*))?- an optional sequence of:(\[RESP\])- Group 2:[RESP](.*)- Group 3: any zero or more chars other than line break chars as many as possible
$- end of string.
·
Juan Pablo Isaza
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