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| <!DOCTYPE HTML> | |
| <html> | |
| <head> | |
| <script type="text/javascript"> | |
| //------------------------------------------------------------------------------------------------------------------ | |
| // YOUR CODE: Create your Zoo "object literal" and Animal "constructor" and "prototypes" here. | |
| //------------------------------------------------------------------------------------------------------------------ | |
| function Zoo(animals) { | |
| this.animals = animals; | |
| function(animals) { | |
| var bipedsArr = new Array; | |
| for (var i=0; i < animals.length; i++) { | |
| if (animals[i].num_legs == 2) { | |
| bipedsArr.push(animals[i]); | |
| } | |
| } | |
| this.bipeds = bipedsArr | |
| var quadrupedsArr = new Array; | |
| for (var i=0; i < animals.length; i++) { | |
| if (animals[i].num_legs == 4) { | |
| quadrupedsArr.push(animals[i]); | |
| } | |
| } | |
| this.quadrupeds = quadrupedsArr; | |
| } | |
| } // end init | |
| 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) | |
| ]; | |
| function Animal(name, num_legs) { | |
| this.name = name; | |
| this.num_legs = num_legs; | |
| this.identify = function() { | |
| // console.log("I am a " + this.name + " with " + this.num_legs " legs. , " + this.name + "s have " + this.num_legs + " legs."); | |
| } | |
| } // end Animal | |
| // function Zoo(animals) { | |
| // this.animals = animals; | |
| // this.init = function(animals) { | |
| // this.animals = animals; | |
| // for (var i=0; i < animals.length; i++) { | |
| // new Animal(animals[i][0], animals[i][1]) | |
| // } | |
| // } | |
| // // | |
| // } // end zoo | |
| // bipeds = []; | |
| // quadrupeds = []; | |
| // init : function(animals) { | |
| // for (var i=0, i < animals.length, i++) { | |
| // if (animals[i].num_legs == 4) { | |
| // quadrupeds.push(animals[i]; | |
| // } elsif { (animals[i].num_legs == 2) | |
| // bipeds.push(animals[i]); | |
| // } | |
| // } | |
| // } | |
| </script> | |
| <!--script type="text/javascript" src="zoo.js"/></script--> | |
| </head> | |
| <body> | |
| </body> | |
| </html> |
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| //------------------------------------------------------------------------------------------------------------------ | |
| // YOUR CODE: Create your Zoo "object literal" and Animal "constructor" and "prototypes" here. | |
| //------------------------------------------------------------------------------------------------------------------ | |
| // function Zoo(animals) { | |
| // this.animals = animals; | |
| // function(animals) { | |
| // var bipedsArr = new Array; | |
| // for (var i=0; i < animals.length; i++) { | |
| // if (animals[i].num_legs == 2) { | |
| // bipedsArr.push(animals[i]); | |
| // } | |
| // } | |
| // this.bipeds = bipedsArr | |
| // var quadrupedsArr = new Array; | |
| // for (var i=0; i < animals.length; i++) { | |
| // if (animals[i].num_legs == 4) { | |
| // quadrupedsArr.push(animals[i]); | |
| // } | |
| // } | |
| // this.quadrupeds = quadrupedsArr; | |
| // } | |
| // } // end init | |
| function Animal(name, num_legs) { | |
| this.name = name; | |
| this.num_legs = num_legs; | |
| // this.identify = function() { | |
| // console.log("I am a " + this.name + " with " + this.num_legs " legs. , " + this.name + "s have " + this.num_legs + " legs."); | |
| // } | |
| } // end Animal | |
| Animal.prototype.identify = function() { | |
| var a = "I am a " + this.name + " with " + this.num_legs " legs. , " + this.name + "s have " + this.num_legs + " legs.") | |
| console.log(this); | |
| } | |
| Zoo = { | |
| init: function(animals){ | |
| this.animals = animals | |
| }, | |
| bipeds: function(){ | |
| return this.animals.filter(function(animal){ | |
| return animal.num_legs === 2; | |
| }); | |
| } | |
| } | |
| // function Zoo(animals) { | |
| // this.animals = animals; | |
| // this.init = function(animals) { | |
| // this.animals = animals; | |
| // for (var i=0; i < animals.length; i++) { | |
| // new Animal(animals[i][0], animals[i][1]) | |
| // } | |
| // } | |
| // // | |
| // } // end zoo | |
| // bipeds = []; | |
| // quadrupeds = []; | |
| // init : function(animals) { | |
| // for (var i=0, i < animals.length, i++) { | |
| // if (animals[i].num_legs == 4) { | |
| // quadrupeds.push(animals[i]; | |
| // } elsif { (animals[i].num_legs == 2) | |
| // bipeds.push(animals[i]); | |
| // } | |
| // } | |
| // } | |
| 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( | |
| // console.log(animals[0].identify) | |
| animals[0].identify === animals[5].identify, "only one implementation of the identify() function should exist" | |
| ); |
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| //------------------------------------------------------------------------------------------------------------------ | |
| // YOUR CODE: Create your Zoo "object literal" and Animal "constructor" and "prototypes" here. | |
| //------------------------------------------------------------------------------------------------------------------ | |
| function Zoo(animals) { | |
| this.animals = animals; | |
| this.init = function(animals) { | |
| this.animals = animals; | |
| for (var i=0, i < animals.length, i++) { | |
| new Animal(animals[i][0], animals[i][1]) | |
| } | |
| } | |
| // this.bipeds = function(animals) { | |
| // var bipeds = [] | |
| // for (var i=0, i < animals.length, i++) { | |
| // if { (animals[i].num_legs == 2) | |
| // bipeds.push(animals[i]); | |
| // } | |
| // } | |
| // return bipeds; | |
| // } | |
| } | |
| function Animal(name, num_legs) { | |
| this.name = name; | |
| this.num_legs = num_legs; | |
| this.identify = function() { | |
| 'I am a ' + this.name + ' with ' + this.num_legs ' legs. , ' + this.name + 's have ' + this.num_legs + ' legs.' | |
| } | |
| function animals() { | |
| Zoo.call(this) | |
| } | |
| } | |
| // bipeds = []; | |
| // quadrupeds = []; | |
| // init : function(animals) { | |
| // for (var i=0, i < animals.length, i++) { | |
| // if (animals[i].num_legs == 4) { | |
| // quadrupeds.push(animals[i]; | |
| // } elsif { (animals[i].num_legs == 2) | |
| // bipeds.push(animals[i]); | |
| // } | |
| // } | |
| // } | |
| } | |
| //------------------------------------------------------------------------------------------------------------------ | |
| // 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); | |
| z = new Zoo(animals) | |
| console.log(z) | |
| 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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