![](https://images.gutefrage.net/media/default/user/12_nmmslarge.png?v=1551279448000)
![](https://images.gutefrage.net/media/default/user/15_nmmslarge.png?v=1551279448000)
Antwort
mit ES6
let querSumme = zahlen => String(zahlen).split("").map(Number).reduce(plus,0);
let plus = (a,b) => a+b;
console.log(querSumme(1234)); //10