JSFiddle - React, Tailwind, and code Playground
JavaScript
var addTwoNumbers = function(l1, l2) {
const arrayOfSum = [];
let numberType1 = '';
let numberType2 = '';
for(let i=0;i<l1.length;i++){
//arrayOfSum.unshift(l1[i]+l2[i]);
numberType1 += l1[i]+""
numberType2 += l2[i]+""
}
arrayOfSum.unshift(Number(numberType1) + Number(numberType2));
return arrayOfSum.toString().split("");
};
console.log(addTwoNumbers([2,4,3],[5,6,4]));