August 2017
Intermediate to advanced
500 pages
12h 3m
Japanese
Content preview from PythonとJavaScriptではじめるデータビジュアライゼーション
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78
4 章 Web 開発の基本
最適化プロファイリング、デバイスエミュレーション（
Web
ページがスマートフォンやタブレッ
トでどのように見えるかを知る）などにおよぶ大量の機能を提供しています。
Chrome Developer
は私の一押しのデバッガで、本書でも使用します。本書で取り上げるすべてのツールと同様に、
Chrome Developer
も無料です。
4.3.4
ターミナルとコマンドプロンプト
ターミナルやコマンドラインは、さまざまなサーバを起動したり、便利なロギング情報を出力
する場所です。また、
Python
モジュールを試したり、
Python
インタプリタ（いろいろな意味で
IPython
が最適です）を実行する場所でもあります。
OS X
と
Linux
では、このウィンドウはターミナルまたは
xterm
と呼ばれます。
Windows
で
は、コマンドプロンプトと呼ばれ、［スタート］→［すべてのプログラム］→［アクセサリ］をクリッ
クして起動します。
4.4
Web
ページの作成
Web
の可視化は通常、
4
つの要素からなります。
•
プログラムによる可視化のためのプレースホルダを含む
HTML
スケルトン
•
外観（境界線の幅、色、フォントサイズ、コンテンツブロックの配置など）を決定する
CSS
•
可視化を作成する
JavaScript
•
変換するデータ
最初の
3
つは単なるテキストファイルです。好きなエディタで作成して
Web
サーバからブラウ
ザに配信します（
12
章を参照）。次に各要素を調べてみましょう。
4.4.1
HTTP
を使ったページの配信 ...
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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.