1부터 10까지의 합계
<!DOCTYPE html>
<html lang="ko">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script>
// 1부터 10까지의 합계 : 55
cnt = 0;
sum = 0;
while(cnt<= 10){
sum += cnt;
cnt++;
}
console.log(sum);
</script>
</head>
<body>
</body>
</html>
위의 예제를 for문으로 변경
<!DOCTYPE html>
<html lang="ko">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script>
// 1부터 10까지의 합계 : 55
cnt = 0;
sum = 0;
while(cnt<= 10){
sum += cnt;
cnt++;
}
console.log(sum);
// 위의 예제를 for문으로
sum=0;
for(cnt=0; cnt<=10; cnt++){
sum += cnt;
}
console.log(sum);
</script>
</head>
<body>
</body>
</html>2의 10승을 구하기
Document<script>
// 2의 10승을 구하기
cnt = 0;
sum1 = 1;
while(cnt<10){
sum1 *= 2;
cnt++;
}
console.log(sum1);
</script>위의 예제를 do-while 문으로
<!DOCTYPE html>
<html lang="ko">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script>
cnt = 0;
sum1 = 1;
do{
sum1 *= 2;
cnt++;
}while(cnt<10);
console.log(sum1);
</script>
</head>
<body>
</body>
</html>
위의 예제를 for문으로
<!DOCTYPE html>
<html lang="ko">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script>
sum1=1;
for(cnt=0; cnt<10; cnt++){
sum1 *= 2
}
console.log(sum1);
</script>
</head>
<body>
</body>
</html>
별 10개 출력하기
<!DOCTYPE html>
<html lang="ko">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script>
// 별 10개 출력하기
let cnt1 = 0;
while(cnt1<10){
console.log("*");
cnt1 ++;
}
</script>
</head>
<body>
</body>
</html>위의 예제를 for문으로
<!DOCTYPE html>
<html lang="ko">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script>
for(cnt = 0; cnt<10; cnt++){
console.log("*");
}
</script>
</head>
<body>
</body>
</html>
