How can I match overlapping strings with regex?

Question

Let\'s say I have the string

\"12345\"

If I .match(/\\d{3}/g), I only get one match, \"123\". Why don\'t I get

Answer 1

I would consider not using a regex for this. If you want to split into groups of three you can just loop over the string starting at the offset:

let s = "12345"
let m = Array.from(s.slice(2), (_, i) => s.slice(i, i+3))
console.log(m)