Demonstrates taking an object parameters, with default values

defaultparams.js

let foo = ({param1 = 1, param2 = 2, param3 = 3} = {}) => {
  return (param1 + param2) / param3;
};

console.log(foo());                       //returns 1
console.log(foo({param3: 1}));            //returns 3
console.log(foo({param1: 7, param2: 2})); //returns 3
console.log(foo({param1: 6, param3: 2})); //returns 4