Provided string is RegExp format or not

Question

The provided string is javascript RegExp or not

Is there any kind of method that will check the provided string is javascript RegExp format or not?

Possible duplicate of [Is there a regular expression to detect a valid regular expression?](https://stackoverflow.com/questions/172303/is-there-a-regular-expression-to-detect-a-valid-regular-expression) — adiga, May 08 '19 at 12:36

score 0 · Answer 1 · answered May 08 '19 at 12:35

0

You can try below code

var isRegExp = true;
try {
    new RegExp("regexphere");
} catch(e) {
    isRegExp = false;
}

if(!isRegExp) alert("Not a valid regular expression");

answered May 08 '19 at 12:35

Alex

This will work withour error for any string you provide as a parameter – Raul Rene May 08 '19 at 12:37
@RaulRene try with an opening bracket `[` somewhere in the string – adiga May 08 '19 at 12:41
@RaulRene not true. – Alex May 08 '19 at 12:44
@UDITSONI How is it not working? Works perfectly fine for me. – Alex May 10 '19 at 09:11

1 Answers1