February 2022
Beginner to intermediate
784 pages
24h 53m
Korean
Content preview from 자바스크립트 완벽 가이드
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JavaScript
502
15장 웹 브라우저의 자바스크립트
소의 부모, 자식, 형제를 참조하는 Element 객체의 프로퍼티일 뿐입니다.
parentNode
요소의 부모를 참조합니다. 부모 역시 또 다른 Element 객체이거나 Document
객체입니다.
children
이 노드리스트는 요소의 자식인 요소를 포함하지만, 요소가 아닌 자식인 Text 노
드와 Comment 노드는 제외합니다.
childElementCount
자식 요소 개수입니다.
children.length
와 같은 값을 반환합니다.
firstElementChild
,
lastElementChild
요소의 자식 중 첫 번째와 마지막을 각각 참조합니다. 자식인 요소가 없다면
null
입니다.
nextElementSibling
,
previousElementSibling
요소의 바로 앞이나 바로 다음에 있는 형제 요소를 참조하며 그런 형제가 없다
면
null
입니다.
이들 프로퍼티를 활용해 문서의 첫 번째 자식 요소의 두 번째 자식 요소를 다음과
같이 찾을 수 있습니다.
document.children[0].children[1]
document.firstElementChild.firstElementChild.nextElementSibling
(표준 HTML 문서에서 두 표현식은 모두
<body>
요소를 참조합니다.)
다음 ...
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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.