JavaScript - Understanding Objects: A trip to Objectville(How to access a property, dot notation)

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 5(Understanding Objects: A trip to Objectville)、OBJECT MAGNETS(p.183)を解いてみる。

OBJECT MAGNETS(p.183)

コード(BBEdit, Emacs)

var dog = {
        name: 'Fido',
        weight: 20.2,
        age: 4,
        breed: 'mixed',
        activity: 'fetch balls'
    },
    bark,
    speak;

if (dog.weight > 20) {
    bark = 'WOOF WOOF';
} else {
    bark = 'woof woof';
}
speak = dog.name + ' says ' + bark + ' when he want to ' + dog.activity;
print(speak);