A regex to match a filename that DOESN'T have an extension

Question

I'm looking for a regex that will only match when there is NO extension in a file name.

test.doc = no match
testaaa = match

I can posititely find the '.' with /. but how can I negate this? I tried using (?!.) but I get a match on every character of the file name.

Thanks

Did you already try the `end`-Anchor `$`? `/^[^.]+$/` could help — Psi, Oct 31 '17 at 22:26
There is the "doesn't match" operator, in most languages it's like `something !~ /.../` — rogerdpack, Oct 31 '17 at 22:27
So, your question is just about how to match anything but dot chars. — Wiktor Stribiżew, Oct 31 '17 at 22:45

score 1 · Accepted Answer · answered Oct 31 '17 at 22:27

1

I'd check that the file doesn't have any dots with ^[^.]*$:

var patt = new RegExp("^[^.]*$");

console.log(patt.test('test.doc'));
console.log(patt.test('testaaa'));

answered Oct 31 '17 at 22:27

Obsidian Age

1 Answers1