April 2016
Beginner to intermediate
389 pages
9h 8m
Korean
Content preview from 한 권으로 끝내는 Node & Express: 웹사이트 구축을 위한 서버 사이드 자바스크립트
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161
10
장
-
미들웨어
}
next
();
}
}
그러면 미들웨어를 다음과 같이 연결할 수 있습니다.
var cartValidation
=
require
('./
lib
/
cartValidation
.
js
');
app
.
use
(
cartValidation
.
checkWaivers
);
app
.
use
(
cartValidation
.
checkGuestCounts
);
NOTE
_
예제의 미들웨어에는
return
next
() 문으로 중간에 빠져나가는 코드가 있습니다. 익스프레스
는 미들웨어에서 값을 반환하지 않는다고 가정하며 반환값은 모두 무시하므로, 이 문은
next
();
return
;
과 마찬가지입니다.
10.1.
공통 미들웨어
익스프레스
4
.
0
이전에는 커넥트가 기본으로 들어 있었습니다. 커넥트는 가장 널리 쓰이는 미
들웨어를 대부분 포함하고 있습니다. 익스프레스가 커넥트를 번들로 끼워 넣었던 탓에 미들웨
어들이 마치 익스프레스의 일부인 것처럼 보였습니다. 예를 들어
body
-
parser
를 연결할 때는
app
.
use
(
express
.
bodyParser
)
처럼 썼습니다. 이 표기법은 이 미들웨어가 커넥트의 일부라
는 사실을 모호하게 만들었습니다. 익스프레스가
4
.
0
에 들어오면서 커넥트는 분리되었습니다.
이와 함께
body
-
parser
등 커넥트 미들웨어 일부가 커넥트에서 빠져나와 고유 프로
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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.