February 2022
Beginner to intermediate
784 pages
24h 53m
Korean
Content preview from 자바스크립트 완벽 가이드
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
the Denitive Guide
557
15.8 <canvas>의 그래픽
shadowOffsetX
,
shadowOffsetY
프로퍼티는 그림자의 가로와 세로 오프셋을 지정
합니다. 기본 값은 0이며 그림자가 그림 바로 아래 생기므로 보이지 않습니다. 두 프
로퍼티에 양수를 지정하면 광원이 왼쪽 위에 있는 것처럼 오른쪽 아래에 그림자가
생깁니다. 오프셋이 크면 클수록 그림자도 커지고 그림이 캔버스 위에 더 ‘높이’ 위
치한 것처럼 보입니다. 이 값은 15.8.5절에서 설명할 좌표 변형과는 무관합니다. 그
림자의 방향과 그림의 ‘높이’는 도형을 회전하고 확대하더라도 그대로 유지됩니다.
shadowBlur
프로퍼티는 그림자의 경계선을 얼마나 흐리게 처리할지 지정합니다.
기본 값은 그림자가 전혀 흐려지지 않는 0입니다. 값이 클수록 더 흐려지고, 이 값
의 한계는 실행 환경에 따라 다릅니다.
strokeStyle
이나
fillStyle
에
rgba(…)
같은 CSS 색깔 문법을 사용해 반투명한 색
깔을 쓸 수 있습니다. RGBA의 a는 알파(alpha)를 뜻하며 완전히 투명한 0에서 완
전히 불투명한 1 사이의 값입니다. 캔버스 API는 반투명한 색깔을 다른 방법으로
도 지정할 수 있습니다. 각 색깔에 명시적으로 알파 채널을 지정하지 않고
global
Alpha ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.