# and ^ should not match in this regular expression /([a-zA-Z][^a-zA-Z]*){3,}/ in Javascript

Question

The minimum string length should be 3 and it should not contain # and ^ in the string

I tried with /([a-zA-Z][^a-zA-Z#^]*){3,}/, It's working on https://regexr.com, but its not working all testing tools like https://www.regextester.com .

Most likely a duplicate of: [Match exact string](https://stackoverflow.com/q/6298566) — VLAZ, Nov 02 '22 at 07:20
The pattern matches 3 or more times matching a single char a-zA-Z followed by optional chars other than `a-zA-Z#^` and works on both testing tools. Why would it not work? — The fourth bird, Nov 02 '22 at 07:33
@TimBiegeleisen except of # and ^ , all char is allowed. first char should not space — manishk, Nov 02 '22 at 11:44
@Thefourthbird please send proper regex and both testing tools — manishk, Nov 02 '22 at 11:46
If the minimum length should be 3, then `^[a-zA-Z][^a-zA-Z#^]{2,}$` See https://regexr.com/71fee and https://regex101.com/r/4vVml2/1 — The fourth bird, Nov 02 '22 at 12:07

Henryc17 · Answer 1 · 2022-11-04T12:23:42.593

2

EDITED: ^(?![^a-zA-Z0-9])[^#^]{3,}$ should do the work if you just want to:

edited Nov 04 '22 at 12:23

answered Nov 02 '22 at 07:26

Henryc17

It is taking space as a first char, but it should not be allowed – manishk Nov 02 '22 at 11:30
1

@manishk that's not what your question said: "*The minimum string length should be 3 and it should not contain # and ^ in the string*" and [you didn't clarify when you were asked what it should contain](https://stackoverflow.com/questions/74285574/and-should-not-match-in-this-regular-expression-a-za-za-za-z3-i/74285666?noredirect=1#comment131149083_74285574). Please think *carefully* about your questions before you ask them. You've been given an answer based on what you asked, not based on information that was not presented. – VLAZ Nov 02 '22 at 11:33
@VLAZ it is a common thing, string will not take the first char as a space normally – manishk Nov 02 '22 at 11:43
@manishk, strings in programming have a very large chance to start with a space character, especially when you trying to combine two strings: `"Posted"+" at yesterday"`. It's not such "a common thing". If you wish to not include space has first char, you should specify the requirements in the question, pls review my edit. – Henryc17 Nov 02 '22 at 14:50
@Henryc17 sorry for the one more test case, actually it should start with a number or char only, not with special char, in between of string special char we can use except for # and ^, thanks for support! – manishk Nov 04 '22 at 10:19
@manishk, Ive made another edit, pls take a look. – Henryc17 Nov 04 '22 at 12:23

1 Answers1