Javascript destructuring with default values

js_default_values.js

// destructuring and default values
const give_discount = ({item, price, percent_discount=10})=>{
  console.log('For the ' + item + ' listed at $' + price +
                ', you get ' + percent_discount + '% off!')
}

give_discount({item: 'sweater', price: 200, percent_discount: 25})
//=> For the sweater listed at $200, you get 25% off!

give_discount({item: 'dress shoes', price: 350})
//=> For the dress shoes listed at $350, you get 10% off!