JavaScript - Liberated functions: First Class Functions(Returning functions from functions)

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 10(Liberated functions: First Class Functions)、SHARPEN YOUR PENCIL(p.453)を解いてみる。

SHARPEN YOUR PENCIL(p.453)

コード(BBEdit, Emacs)

var addN = function (n) {
        var adder = function (x) {
            return n + x;
        }
        return adder;
    },
    adder10,
    adder100;

adder10 = addN(10);
adder100 = addN(100);

print(adder10(5))      // 15
print(adder10(10000))  // 10010
print(adder100(5))     // 105
print(adder100(10000)) // 10100