Modern JS ES6+ features - Arrow Functions

arrow_functions.js

//The old way of writing functions
var addf = function add(x, y) {
  var sum = x + y;
  return sum;
};
console.log(`The sum is : ${addf(10, 20)}`);

//The new way of writing functions
var newAdd = (x, y) => x + y;
console.log(`The sum is : ${newAdd(10, 20)}`);