Array of digits of a number in JavaScript

Let's get an array of digits of a number. Let the following number be given:

javascriptlet num = 12345;

Trying to expand a number in terms of spread will result in an error, since numbers are not iterable:

javascriptlet num = 12345;
let arr = [...num]; // an error
console.log(arr);

To solve the problem, we convert the number to a string:

javascriptlet num = 12345;
let arr = [...String(num)];
console.log(arr); // ['1', '2', '3', '4', '5']

We, however, have an array of strings, not numbers. Let's fix the problem with a trick using the map method:

javascriptlet num = 12345;
let arr = [...String(num)].map(Number);
console.log(arr); // [1, 2, 3, 4, 5]