String to array with different length using regex

Question

String to array with length 2 can be done like below.

let str1 = '112213';
let str1Array = str1.match(/.{2}/g);
console.log(str1Array);

And the result is

[ '11', '22', '13' ]

Is it possible to get [ '1', '12', '2' , '13'] similarly?

Answer 1

You can use split() instead of match() providing both lengths in one regex:

(.)(..)?

Optional quantifier is essential when string length is not even.

JS Code:

console.log(
  '112213'.split(/(.)(..)?/).filter(Boolean)
);