Question

In Java regexes, you can use the intersection operator && in character classes to define them succinctly, e.g.

[a-z&&[def]]    // d, e, or f
[a-z&&[^bc]]    // a through z, except for b and c

Is there an equivalent in JavaScript?

Answer 1

Is there an equivalent in JavaScript?

Simple answer: no, there’s not. It is specific Java syntax.

See: Regular Expressions Cookbook by Jan Goyvaerts and Steven Levithan. Here’s a sneak-peek to the relevant section.

Probably needless to say, but the following JavaScript code:

if(s.match(/^[a-z]$/) && s.match(/[^bc]/)) { ... }

would do the same as the Java code:

if(s.matches("[a-z&&[^bc]]")) { ... }