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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100
러닝 자바스크립트
필요한 복잡한 검색과 교체 작업을 비교적 단순하게 만듭니다. 정규표현식은
17
장에서 설명합
니다. 자바스크립트의 정규표현식은
RegExp
객체를 사용합니다. 슬래시 한 쌍(
/.../
) 사이에
심볼을 넣는 리터럴 문법도 있습니다. 다음은 정규표현식 예제입니다. 정규표현식을 처음 본다
면 괴상망측해 보일 겁니다.
// 극히 간단한 이메일 정규표현식
const
email
= /\
b
[
a
-
z0
-
9
._-]+@[
a
-
z
_-]+(?:\.[
a
-
z
]+)+\
b
/;
// 미국 전화번호 정규표현식
const
phone
= /(:?\+
1
)?(:?\(\
d
{
3
}\)\
s
?
|
\
d
{
3
}[\
s
- ]?)\
d
{
3
}[\
s
- ]?\
d
{
4
}/;
3.18
맵과 셋
ES6
에서는 새로운 데이터 타입
Map
과
Set
, 그리고 그들의 ‘약한’ 짝인
WeakMap
과
WeakSet
을
도입했습니다. 맵은 객체와 마찬가지로 키와 값을 연결하지만, 특정 상황에서 객체보다 유리한
부분이 있습니다. 셋은 배열과 비슷하지만 중복이 허용되지 않습니다. 위크맵과 위크셋은 맵과
셋과 마찬가지로 동작하지만, 특정 상황에서 성능이 더 높아지도록 일부 기능을 제거한 버전입
니다.
맵과 셋은
10
장에서 설명합니다.
3.19
데이터 타입 변환
데이터 타입을 다른 타입으로 바꾸는 일은 매우 자주 하는 작업입니다. 사용자 입력이나 ...
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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.