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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <!-- | |
| normalize.css removes cross-browser differences in defaults, e.g., | |
| differences in how form elements appear between Firefox and IE | |
| See: http://necolas.github.com/normalize.css/ | |
| --> | |
| <!-- | |
| application.css is where you put your styles | |
| --> | |
| <script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script> | |
| <script src="zoo.js"></script> | |
| <title></title> | |
| </head> | |
| <body> | |
| <div class="container"> | |
| </div> | |
| </body> | |
| </html> |
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| //------------------------------------------------------------------------------------------------------------------ | |
| // YOUR CODE: Create your Zoo "object literal" and Animal "constructor" and "prototypes" here. | |
| //------------------------------------------------------------------------------------------------------------------ | |
| function Animal(name, legs){ | |
| this.name = name; | |
| this.legs = legs; | |
| } | |
| Animal.prototype.identify = function() { | |
| return "I am a "+this.name+" with "+this.legs+" legs."; | |
| }; | |
| function Zoo(animals) { | |
| this.animals = animals; | |
| } | |
| Zoo.init = function(animals) { | |
| console.log(this); | |
| this.animals = animals; | |
| console.log(animals); | |
| console.log(this.animals); | |
| }; | |
| Zoo.bipeds = function() { | |
| var bi = []; | |
| this.animals.map(function(animal) { | |
| if (animal.legs == 2) { | |
| console.log(animal); | |
| bi.push(animal); | |
| } | |
| }); | |
| console.log("number of bipeds array: "); | |
| console.log(bi); | |
| return bi; | |
| }; | |
| Zoo.quadrupeds = function() { | |
| var quad = []; | |
| this.animals.map(function(animal) { | |
| if (animal.legs == 4) { | |
| console.log(animals); | |
| quad.push(animal); | |
| } | |
| }); | |
| console.log(quad); | |
| return quad; | |
| }; | |
| //------------------------------------------------------------------------------------------------------------------ | |
| // 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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