May 2019
Intermediate to advanced
464 pages
9h 22m
Japanese
Content preview from Node.jsデザインパターン 第2版
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8.5
ユニバーサル
JavaScript
アプリケーションの作成
285
●
レ ン ダ リ ン グ す る コ ン ポ ー ネ ン ト は（ モ ジ ュ ー ル
react-router
に 含 ま れ て い る ）
RouterContext
で、これが指定されたルーターの状態に対応するコンポーネントツリーをレ
ンダリングを担当する。このコンポーネントに対して渡すのは、オブジェクト
renderProps
の
中のすべてのフィールドである属性の集合である。このオブジェクトを展開するのに、
JSX
の
属性スプレッド演算子を使う（
https://facebook.github.io/react/docs/jsx-spread.html#spread-
attributes
）。これにより、オブジェクト内のキー
/
値の組がすべて抽出されてコンポーネントの属
性になる
さあ、これで次のコマンドによりスクリプト
server.js
が実行できます。
$ node server
次にブラウザを開き、
http://localhost:3000
を表示させて、サーバがレンダリングしたアプリ
が動くところを見ましょう。
バンドルファイルの読み込みを無効にしたので、現時点ではクライアント側の
JavaScript
コードが実
行されておらず、どの操作も新しいサーバリクエストを生じ、ページ全体が再描画されます。少し不
格好ですね。
次の節では、クライアント側とサーバ側の両方のレンダリングを可能にする方法を示し、ユニバーサ
ルルーティングとレンダリング
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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.