JavaScript - A Quick Dip into Javascript: Getting your feet wet(expressions, evaluations)

Head First JavaScript Programming
( O'Reilly Media)
Eric T. Freeman (著), Elisabeth Robson (著)

開発環境

• OS X Mavericks - Apple(OS)
• Safari, Firefox + Firebug, Google Chrome(Webプラウザ、プラグイン)
• BBEdit - Bare Bones Software, Inc. (GUI) , Emacs (CUI) (Text Editor)
• JavaScript (プログラミング言語)

Head First JavaScript Programming (Eric T. Freeman (著)、 Elisabeth Robson (著)、 O'Reilly Media )のChapter 1(A Quick Dip into Javascript: Getting your feet wet)、SHARPEN YOUR PENCIL(p.16)を解いてみる。

SHARPEN YOUR PENCIL(p.16)

コード(BBEdit, Emacs)

var result = '',
    temp = 10,
    color1 = 'pink',
    color2 = 'orange',
    name = 'Martha',
    yourLevel1 = 2,
    yourLevel2 = 5,
    yourLevel3 = 7,
    level = 5,
    points = 30000,
    bonus = 3300;

result += ((9 / 5) * temp + 32) + ' // 50\n';
result += (color1 === 'orange') + ' // false\n';
result += (color2 === 'orange') + ' // true\n';
result += (name + ', ' + "you've won!") + " // Martha, you've won!\n";
result += (yourLevel1 > 5) + ' // false\n';
result += (yourLevel2 > 5) + ' // false\n';
result += (yourLevel3 > 5) + ' // true\n';
result += ((level * points) + bonus) + ' // 153300\n';
result += (color1 !== 'orange') + ' // true\n';
result += (1000 + '108') + ' // 1000108\n';
print(result);