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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322
러닝 자바스크립트
15.5.1
서버에서 날짜 생성하기
서버에서 날짜를 생성할 때는 항상
UTC
를 사용하거나 타임존을 명시하는 편이 좋습니다. 최
근에는 클라우드 기반으로 애플리케이션을 운영하는 일이 많으므로 똑같은 코드가 전 세계 모
든 곳에서 실행됩니다. 특정 지역을 기준으로 날짜를 생성한다면 골칫거리를 예약하는 것이나
다름없습니다.
UTC
날짜를 사용할 수 있는 환경이라면
Date
객체의
UTC
메서드를 사용하십
시오.
const
d
=
new
Date
(
Date
.
UTC
(
2016
,
4
,
27
)); //
May
27
,
2016
UTC
Date
.
UTC
는
Date
의 매개변수를 똑같이 받지만, 새
Date
인스턴스를 반환하지 않고 해당 날짜의
숫자형 값을 반환합니다. 이 숫자를
Date
생성자에 넘기면 날짜 인스턴스를 얻을 수 있습니다.
특정 타임존에 있는 서버에서 날짜를 생성할 때는
moment
.
tz
를 써서
Date
인스턴스를 만들면
타임존을 손으로 변환할 필요가 없습니다.
//
Moment
.
js
에 넘기는 배열은 자바스크립트의
Date
생성자에 넘기는 매개변수와 똑같고,
// 월은
0
으로 시작합니다.
//
toDate
() 메서드는
Moment
.
js
객체를 자바스크립트
Date
객체로 변환합니다.
const
d
=
moment
.
tz
([
2016
,
3
,
27
,
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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.