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for 예제문Javascript 2023. 6. 22. 15:27
예제) 별 갯수 점차 감소 9,8,7,6,5..1
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> <script> var a = prompt("정수를 입력하세요"); for( i=a; i>0; i--){ for(j=1; j<=i; j++){ document.write("＊"); } document.write("<br>"); } </script> </head> <body> </body> </html>예제) 1부터 입력한 정수까지 곱하기
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> <script> // var n = prompt("정수는?"); // var sum=1; // for(i=1; i<=n; i++){ // sum*=i; // } // document.write(sum); var n = prompt("정수는?"); var sum=1; for(i=n; i>=1; i--){ sum*=i; } document.write(sum); </script> </head> <body> </body> </html>예제)1부터 입력한 정수까지 합하기
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> <script> var n = prompt("정수값을 입력하시오"); var sum=0; for(i=1; i<=n; i++){ sum+=i; } document.write(sum); </script> </head> <body> </body> </html>예제) 숫자 갯수 점차 감소 9,8,7,6,5..1
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> <script> var i=9; var j=1; for(i=9; i>=1; i--){ // 9가 1씩 작아져야 함 for(j=1; j<=i; j++){ document.write(i); } document.write("<br>"); } </script> </head> <body> </body> </html>'Javascript' 카테고리의 다른 글
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