funcPr-practice.js

const cart = [
  { item: '노트북', price: 1200000, quantity: 1 },
  { item: '마우스', price: 35000, quantity: 2 },
  { item: '키보드', price: 89000, quantity: 1 },
];

let totalPrice = 0;
for (let i = 0; i < cart.length; i++) {
  totalPrice += cart[i].price * cart[i].quantity;
}
console.log('총 금액 = ' + totalPrice);

//total Price : 1359000

totalPrice = 0;
cart.forEach((good) => (totalPrice += good.price * good.quantity));
console.log('총 금액 = ' + totalPrice);
//total Price : 1359000

totalPrice = 0;
totalPrice = cart.reduce((a, good) => a + good.price * good.quantity, 0);
console.log('총 금액 = ' + totalPrice);
//total Price : 1359000

/*
const itemTotals = card.map(good => {
    item : good.item,
    total : good.price * good.quantity;
});*/

/*
제품별 금액: [
 { item: ' ', total: 1200000 }, 노트북
 { item: ' ', total: 70000 }, 마우스
 { item: ' ', total: 89000 } 키보드
]


*/
const names = ['alice', 'bob', 'charlie'];

const uppercasedNames = names.map((n) => n.toUpperCase()); //[ 'ALICE', 'BOB', 'CHARLIE' ]
console.log(`upperCaseNames = ${uppercasedNames}`);

const capitalStartnames = names.map((n) => n[0].toUpperCase() + n.slice(1)); //[ 'Alice', 'Bob', 'Charlie' ]
console.log(`uppercasedNames = ${capitalStartnames}`);