How to convert an integer into an array of digits

Question

I want to convert an integer, say 12345, to an array like [1,2,3,4,5].

I have tried the below code, but is there a better way to do this?

Answer 1

Here are the two methods I usually use for this. The first method:

function toArr1(n) {
    "use strict";
    var sum = 0;    
    n = Array.from(String(n), Number); 
       /*even if the type of (n) was a number it will be treated as a string and will 
    convert to an Array*/
    for (i = 0; i < n.length; i += 1) {
        sum += n[i];
    }
    return sum;
}

The second method:

function toArr2(n) {
    var sum = 0;
    n = n.toString().split('').map(Number);
    for (i = 0; i < n.length; i += 1) {
        sum += n[i]; 
    }
    return sum;
}