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@bmurphy1
Forked from dbc-challenges/zoo.js
Last active August 29, 2015 13:56
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<html>
<head>
<script language="javascript" type="text/javascript" src="zoo.js"></script>
</head>
</html>
//------------------------------------------------------------------------------------------------------------------
// YOUR CODE: Create your Zoo "object literal" and Animal "constructor" and "prototypes" here.
//------------------------------------------------------------------------------------------------------------------
var init = function(animals) {
this.animals = animals;
}
var bipeds = function() {
var bipedsArray = new Array();
for (var i = 0; i < this.animals.length; i++) {
if(this.animals[i].legs === 2) {
bipedsArray.push(this.animals[i]);
}
}
return bipedsArray
}
var quadrupeds = function() {
var quadrupedsArray = new Array();
for (var i = 0; i < this.animals.length; i++) {
if(this.animals[i].legs === 4) {
quadrupedsArray.push(this.animals[i]);
}
}
return quadrupedsArray
}
var Zoo = {init: init, bipeds: bipeds, quadrupeds: 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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