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ifEx4.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>자바스크립트</title>
<script type="text/javascript">
var prdNum = prompt("상품번호 입력", "1 또는 2 입력")
// 1또는 2 입력인 경우
if(prdNum ==1 || prdNum ==2){
let prdName, prdPrice, prdQty, amount, discount, total;
//입력한 상품 번호에 따라 상품명, 가격지정
if(prdNum ==1){
prdName = "노트북";
prdPrice = 1200000;
}else{
prdName = "운동화";
prdPrice = 100000;
}
prdQty= prompt("주문수량 입력")
//amount 주문액 구하기
amount = prdPrice * prdQty;
//할인액 구하기
if(amount >= 1000000)
discount = amount * 0.1;
else if(amount >= 500000)
discount = amount * 0.05;
else
discount = 0; // discount=0으로 초기화 했으면 이문장 필요없음
//총 지불액 구하기
total= amount - discount;
// 결과 출력
/*document.write("상품명: " + prdName + "<br>")
document.write("가격: " + prdPrice + "원<br>")
document.write("주문수량: " + prdQty + "개<br>")
document.write("주문액: " + amount + "원<br>")
document.write("할인액: " + discount + "원<br>")
document.write("총지불액: " + total + "원<br>") */
document.write("상품명: " + prdName + "<br>")
document.write("가격: " + prdPrice.toLocaleString() + "원<br>")
document.write("주문수량: " + prdQty + "개<br>")
document.write("주문액: " + amount.toLocaleString() + "원<br>")
document.write("할인액: " + discount.toLocaleString() + "원<br>")
document.write("총지불액: " + total.toLocaleString() + "원<br>")
}else{
alert("잘못 입력하였습니다.")
document.write("종료합니다.")
}
</script>
</head>
<body>
</body>
</html>