July 2017
Beginner to intermediate
464 pages
10h 38m
Korean
Content preview from 러닝 자바스크립트: ES6로 제대로 입문하는 모던 자바스크립트 웹 개발
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337
16
장
Math
Math
.
round
(
x
)
x
의 반올림
Math
.
round
(
7
.
2
) //
7
Math
.
round
(
7
.
7
) //
8
Math
.
round
(-
7
.
7
) // -
8
Math
.
round
(-
7
.
2
) // -
7
Math
.
min
(
x1
,
x2
,...)
매개변수 중 최솟값
Math
.
min
(
1
,
2
) //
1
Math
.
min
(
3
,
0
.
5
,
0
.
66
) //
0
.
5
Math
.
min
(
3
,
0
.
5
, -
0
.
66
) // -
0
.
66
Math
.
max
(
x1
,
x2
,...)
매개변수 중 최댓값
Math
.
max
(
1
,
2
) //
2
Math
.
max
(
3
,
0
.
5
,
0
.
66
) //
3
Math
.
max
(-
3
,
0
.
5
, -
0
.
66
) //
0
.
5
16.3.4
의사 난수 생성
자바스크립트에서 의사 난수를 생성할 때는
Math
.
random
()
을 사용합니다. 이 함수는
0
이상
1
미만의 숫자를 반환합니다. 대수학에서
x
이상
y
이하를 [
x
,
y
],
x
초과
y
미만을 (
x
,
y
)라고
표기한 것을 기억하나요? 이 표기법을 따르면
Math
.
random
()
이 반환하는 숫자는 [
0
,
1
)이라
고 쓸 수 있습니다.
Math
.
random
()
은
0
이상
1
미만의 범위에 있는 의사 난수를 생성할 뿐, 다른 범위의 의사 난수
를 생성하는 간편 메서드는 없습니다. [표
16
-
4
]는 다른 범위의 난수가 필요할 때 널리 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.