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@andmcgregor
Forked from dbc-challenges/zoo.js
Last active December 19, 2015 07:28
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//------------------------------------------------------------------------------------------------------------------
// YOUR CODE: Create your Zoo "object literal" and Animal "constructor" and "prototypes" here.
//------------------------------------------------------------------------------------------------------------------
function Zoo() {
}
Zoo.init = function(animals) {
this.animals = animals;
//alert(this.animals.length);
};
Zoo.bipeds = function() {
bipeds = [];
for (var i = 0; i < this.animals.length; i++) {
if(this.animals[i].legs == 2) {
bipeds.push(this.animals[i]);
}
}
return bipeds;
}
Zoo.quadrupeds = function() {
quadrupeds = [];
for (var i = 0; i < this.animals.length; i++) {
if(this.animals[i].legs == 4) {
quadrupeds.push(this.animals[i]);
}
}
return quadrupeds;
}
function Animal(name, legs) {
this.name = name;
this.legs = legs;
}
Animal.prototype.identify = function() {
return "I am a "+this.name+" with "+this.legs+" legs."
}
//------------------------------------------------------------------------------------------------------------------
// DRIVER CODE: Do **NOT** change anything below this point. Your task is to implement code above to make this work.
//------------------------------------------------------------------------------------------------------------------
function assert(test, message) {
if (!test) {
throw "ERROR: " + message;
}
return true;
}
var animals = [
new Animal("Human", 2),
new Animal("Monkey", 2),
new Animal("Kangaroo", 2),
new Animal("Horse", 4),
new Animal("Cow", 4),
new Animal("Centipede", 100)
];
Zoo.init(animals);
assert(
Zoo.bipeds().length === 3, "the Zoo should have 3 bipeds"
);
assert(
Zoo.quadrupeds().length === 2, "the Zoo should have 2 bipeds"
);
assert(
animals[0].identify() === "I am a Human with 2 legs.", "humans have 2 legs"
);
assert(
animals[2].name === "Kangaroo", "expected 'Kangaroo'"
);
assert(
animals[0].identify === animals[5].identify, "only one implementation of the identify() function should exist"
);
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