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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379
18
장
브라우저의 자바스크립트
18.9
데이터 속성
HTML5
에서는
데이터 (
data
-) 속성
을 도입했습니다. 이 속성을 사용해
HTML
요소에 임의
의 데이터를 추가할 수 있습니다. 브라우저는 이 데이터를 완전히 무시하므로 자바스크립트에
서 쉽게 요소에 관한 정보를 읽거나 수정할 수 있습니다.
HTML
을 수정해서 버튼 두 개를 추가
합시다. 나중에 이 버튼에
highlightParas
와
removeParaHighlights
함수를 연결할 겁니다.
<
button
data
-
action
="
highlight
"
data
-
containing
="
unique
">
Highlight
paragraphs
containing
"
unique
"
</
button
>
<
button
data
-
action
="
removeHighlights
">
Remove
highlights
</
button
>
데이터 속성의 이름은 마음대로 정해도 됩니다. 여기서는
action
과
contains
를 사용했습니다.
document
.
querySelectorAll
을 사용해
action
데이터 속성에
"
highlight
"
가 들어있는 요소
를 모두 찾을 수 있습니다.
const
highlightActions
=
document
.
querySelectorAll
('[
data
-
action
="
highlight
"]');
이 코드에는 ...
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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.