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schnogz/duck-typing-example.js

Created May 17, 2015 18:10
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JavaScript Duck Typing Example
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duck-typing-example.js
function Animal(hasFeathers, sound) {
this.hasFeathers = hasFeathers;
this.sound = sound;
}
Animal.prototype.isDuck = function() {
if (this.hasFeathers && this.sound === "Quack") {
console.log("I am a duck");
} else {
console.log("I am not a duck");
}
}
var duck = new Animal(true, "Quack");
var turkey = new Animal(true, "Gobble");
duck.isDuck(); // true
turkey.isDuck(); // false
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