sum of the digits of a number javascript

Question

I saw a bunch of other posts on this topic but none in javascript. here is my code.

var theNumber = function digitAdd (base, exponent) {
    var number = 1;
         


        

Answer 1

i use this :

'123456'.split('').map(function(e){return parseInt(e)}).reduce(function(a,b){return a+b}); //21

Update (ES6 syntax) :

[...'123456'].map(e=>parseInt(e)).reduce((a,b)=>a+b); //21