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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8.3
クロスプラットフォーム開発の基礎
265
ラウザがブロックされます。警告メッセージを表示するにしても、高品質の「トーストポップアップ」を
使ったほうがずっと魅力的です。このトースト機能を提供するライブラリが
npm
にはたくさんあります
が、そのひとつが
toastr
（
https://npmjs.com/package/toastr
）です。プログラムのインタフェースは
非常に単純で、楽しめるルック＆フィールを提供しています。
toastr
は
jQuery
に依存しますので、最初にしなければならないのは次のコマンドで両方をインス
トールすることです。
$ npm install jQuery toastr
これで
JavaScript
の関数
alert
ではなく
toastr
を使ってモジュール
alertBrowser
を書き直すこ
とができます。
const toastr = require('toastr');
module.e
xports = toastr.info;
関数
toastr.info
は引数として文字列を取り、起動されるとブラウザのウィンドウの右上隅にボッ
クスを出してそこにメッセージを表示してくれます。
Webpack
の設定ファイルは同じですが、今度は
Webpack
が新版のモジュール
alertBrowser
に
ついて依存を解決して完全な依存ツリーを作るので、生成されるバンドルファイルには
jQuery
と
toastr
が含まれることになります。
おまけに、サーバ版のモジュールとファイル
main.js
は変わりませんか ...
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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.