JSFiddle - React, Tailwind, and code Playground

JavaScript

function sum() {
  var args = Array.prototype.slice.call(arguments);
  var sum = args.reduce(function(a, b) {
    return a + b;
  })
  return sum;
}


console.log(sum(1, 2)); // returns 3
console.log(sum(1, 2, 3)); // returns 6