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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363
17
장
정규표현식
그런데 앵커에는 특이한 기능이 있습니다. 문자열에 줄바꿈 문자가 들어있다면
각 줄의
처음과
끝을 찾을 수 있습니다. 각 줄의 처음과 끝을 찾으면
m
플래그를 쓰면 됩니다.
const
input
= "
One
line
\
nTwo
lines
\
nThree
lines
\
nFour
";
const
beginnings
=
input
.
match
(/^\
w
+/
mg
); // ["
One
", "
Two
", "
Three
", "
Four
"]
const
endings
=
input
.
match
(/\
w
+$/
mg
); // ["
line
", "
lines
", "
lines
", "
Four
"]
17.18
단어 경계 일치
단어 경계 일치는 매우 유용한 기능인데도 잘 사용하는 사람이 그리 많지 않은 것 같습니다. 단
어 경계 메타 문자인
\b
와
\B
는 앵커와 마찬가지로
입력을 소비하지 않습니다
. 곧 보겠지만,
입력을 소비하지 않는 것은 매우 유용한 특징입니다.
단어 경계는 알파벳 또는 숫자(
\w
)로 시작하는 부분, 알파벳이나 숫자가 아닌 문자(
\W
)로 끝
나는 부분, 또는 문자열의 시작이나 끝에 일치합니다. 영어 텍스트 안에 들어있는 이메일 주소
를 찾아서 하이퍼링크로 바꾼다고 합시다 (이 예제에서는 이메일 주소가 글자로 시작하고 글자
로 끝난다고 가정합니다 ). 경우의 수는 여러 가지가 있겠지만, ...
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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.