July 2017
Beginner to intermediate
464 pages
10h 38m
Korean
Content preview from 러닝 자바스크립트: ES6로 제대로 입문하는 모던 자바스크립트 웹 개발
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
350
러닝 자바스크립트
const
match
=
beer99
.
match
(/[\-
0
-
9a
-
z
.]/
ig
);
순서는 중요하지 않습니다. 즉
/[.
a
-
z0
-
9\
-]/
도 똑같습니다. 하이픈은 이스케이프해야 합니
다. 이스케이프하지 않으면 정규식은 하이픈을 범위를 표시하는 메타 문자라고 간주합니다 (닫
는 대괄호 바로 앞에 쓰는 하이픈은 이스케이프하지 않아도 됩니다 ).
문자셋은 특정 문자, 또는 범위를
제외
negate
하고 찾을 수도 있습니다. 문자셋을 제외할 때는 다
음과 같이 캐럿 (
^
)을 맨 앞에 쓰면 됩니다.
const
match
=
beer99
.
match
(/[^\-
0
-
9a
-
z
.]/);
위 정규식은 원래 문자열에서 공백만 찾습니다. 처음부터 공백만 찾으려고 했다면 더 나은 방
법이 있는데, 곧 알게 됩니다.
17.9
자주 쓰는 문자셋
매우 자주 쓰이는 일부 문자셋은 단축 표기가 따로 있습니다. 이들을 클래스라고 부르기도 합
니다.
문자셋 동등한 표현 노트
\
d
[
0
-
9
]
\
D
[^
0
-
9
]
\
s
[ \
t
\
v
\
n
\
r
]
탭, 스페이스, 세로 탭, 줄바꿈이 포함됩니다.
\
S
[^ \
t
\
v
\
n
\
r
]
\
w
[
a
-
zA
-
Z
_]
하이픈과 마침표는 포함되지 않으므로 이 문자셋으로 도메인 이름이나
CSS
클래스 등을 찾을 수는 없습니다.
\
W
[^
a
-
zA
-
Z
_]
351
17
장
정규표현식
위 단축 표기 중에서 가장 ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.