Webアプリケーションをゼロから構築することは、困難かつ時間のかかるプロセスになる恐れがあります。例えば、エンタープライズレベルのアプリを作成するには、いくつかの異なる種類のコンポーネントに対して、複雑なコードを記述しなければなりません。コンポーネントは、インタラクティブなユーザーインターフェイスを作成するためのプログラミング部品と捉えることができます。幸いにも現在、開発者はJavaScriptフレームワークやJavaScript UIコンポーネントライブラリを使用して、Web開発プロセスを高速化することができます。JavaScriptライブラリには、Webアプリ作成に必要となるボタン、テキストフィールド、プログレスバー、デートピッカー、タイムピッカー、ドロップダウンリストなど、いくつかの一般的な機能や UIコンポーネントを提供する、あらかじめ構築済の再利用可能なJavaScript コードが付属しています。これにより、開発者は反復的なコードを何度も記述しなくて済むのです。 このチュートリアルでは、主要なUIコンポーネントライブラリの1つである「Sencha Ext JS」を使用して、機能的なアプリをすばやく作成する方法を紹介します。 (more…)

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