How to discard a match if the string contains a certain word in regex?

Question

I have the following regex: start([\s\S]*?)end.

The regex should only match between start and end.

start text text text end

And discard matches containing forbidden between start and end.

start text text text forbidden end

I have tried adding a negative lookahead but i can't get it to work.

You should write regex for matching strings with forbidden. So if match not found then it is valid string — Rajen Raiyarela, Nov 02 '18 at 09:30
While `start((?:(?!forbidden)[\s\S])*?)end` is the regex you seek, I'd rather suggest filtering the matches you get now with the `forbidden` substring. — Wiktor Stribiżew, Nov 02 '18 at 09:31
Thank you, i will filter them out. My apologies for the duplicate question, should i delete it? — Daniël Visser, Nov 02 '18 at 09:37

score 0 · Answer 1 · answered Nov 02 '18 at 09:30

0

With RegX:

var str='start text text text forbidden end';
var output = str.replace(/ *\b\S*?forbidden\S*\b/g, '');
console.log(output);

Without regx:

var str = "start text text text forbidden end".replace('forbidden','');
console.log(str);

answered Nov 02 '18 at 09:30

Dinesh Ghule

1 Answers1