Skip to content

Instantly share code, notes, and snippets.

@lorenanicole
Forked from dbc-challenges/zoo.js
Last active August 29, 2015 13:56
Show Gist options
  • Save lorenanicole/8848260 to your computer and use it in GitHub Desktop.
Save lorenanicole/8848260 to your computer and use it in GitHub Desktop.
<html>
<head>
</head>
<script src="zoo.js"></script>
<script>
function init() {
console.log("I'm here!!");
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)
];
animals[0].identify();
var zoo = new Zoo;
zoo.init(animals);
console.log(zoo.bipeds().length==3);
console.log(zoo.quadrupeds().length==2);
}
</script>
<body onload="init()">
</body>
</html>
//------------------------------------------------------------------------------------------------------------------
// YOUR CODE: Create your Zoo "object literal" and Animal "constructor" and "prototypes" here.
//------------------------------------------------------------------------------------------------------------------
// (function(window) {
// function Animal(type, num_limbs) {
// this.type = type;
// this.num_limbs = num_limbs;
// }
// window.Animal = Animal;
// Animal.prototype.identify = function() {
// console.log("I am a " + this.type + " with " + this.num_limbs + " legs.");
// };
// window.Zoo = Zoo;
// function Zoo() {
// }
// Zoo.prototype.init = function(animal) {
// this.animals = animals;
// };
// Zoo.prototype.bipeds = function() {
// var bipeds = [];
// for(var i = 0; i < animals.length; ++i) {
// if (animals[i].num_limbs == 2)
// bipeds.push(animals[i]);
// }
// return bipeds;
// };
// Zoo.prototype.quadrupeds = function() {
// var quadrupeds = [];
// for(var i = 0; i < animals.length; ++i) {
// if (animals[i].num_limbs == 4)
// quadrupeds.push(animals[i]);
// }
// return quadrupeds;
// };
// }(window)); // creates a new scope
function Animal(type, num_limbs) {
this.type = type;
this.num_limbs = num_limbs;
}
// window.Animal = Animal;
Animal.prototype.identify = function() {
console.log("I am a " + this.type + " with " + this.num_limbs + " legs.");
};
// window.Zoo = Zoo;
function Zoo() {
}
Zoo.prototype.init = function(animal) {
this.animals = animals;
};
Zoo.prototype.bipeds = function() {
var bipeds = [];
for(var i = 0; i < animals.length; ++i) {
if (animals[i].num_limbs == 2)
bipeds.push(animals[i]);
}
return bipeds;
};
Zoo.prototype.quadrupeds = function() {
var quadrupeds = [];
for(var i = 0; i < animals.length; ++i) {
if (animals[i].num_limbs == 4)
quadrupeds.push(animals[i]);
}
return quadrupeds;
};
// creates a new scope
//------------------------------------------------------------------------------------------------------------------
// 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"
);
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment