July 2016
Intermediate to advanced
384 pages
10h 11m
Japanese
Content preview from CSSシークレット ―47のテクニックでCSSを自在に操る
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この例では、 ‐ms‐border‐radiusと ‐o‐border‐radiusの 2つは完
全に無駄です。IEとOperaは初めからborder‐radiusを接頭辞なしで実
装しており、接頭辞つきのものはまったく存在しません。
すべての機能を最大 5 回も繰り返し記述しなければならないというのは
面倒であり、保守も困難です。そこで当然のように、こういった記述を自
動化できるツールが生まれました。いくつか例を紹介します。
将来にわたって機能を利用し続けられるようにするために、開発者は接
頭辞なしの機能を利用しがちです。しかしそうすると、一度定義された機
能は変更がほぼ不可能になります。我々は中途半端な未完成の仕様に縛ら
れ、限られた範囲の変更しか許されない状況に陥っています。ベンダーの
接頭辞という仕組みが壮大な失敗に終わったことは、間もなく誰の目にも
明らかになるでしょう。
‐moz‐border‐radius:10px;
‐ms‐border‐radius:10px;
‐o‐border‐radius:10px;
‐webkit‐border‐radius:10px;
border‐radius:10px;
CSS3, Please!（ css3please.com） や pleeease（ pleeease.io/
playground.html）などの Web サイトを利用すると、接頭辞なしのコー
ドを元にしてすべての接頭辞を含むコードを生成できます。接頭辞を自動
的に加え ...
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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.