javascript grab part of a string after a . (dot)

Question

I'm unable to read regex.

Let's say we have this string: "mydomain.bu.pu" and I want to grab the ".bu.pu" part of it;

I'm thinking about using something like:

indexOf and later substr ... But I confess I'm kind of lost...

Any help please? :D

Thanks in advance, MEM

Answer 1

var afterDot = str.substr(str.indexOf('.'));

Answer 2

The above answers include the dot in the string. If you only want what's after the dot:

var afterDot = str.substr( str.indexOf('.') + 1 );

Answer 3

s = s.substring(s.indexOf("."));

That should do the trick.