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JavaScript-II #20

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6f16b49
Update prototype.js
oggiedoggy12 Oct 7, 2017
ac23d34
Update class.js
oggiedoggy12 Oct 7, 2017
168cc5b
Update recursion.js
oggiedoggy12 Oct 7, 2017
9a0c0c1
Update this.js
oggiedoggy12 Oct 7, 2017
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50 changes: 48 additions & 2 deletions src/class.js
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,34 @@
// for a potential password that will be compared to the `password` property.
// Return true if the potential password matches the `password` property. Otherwise return false.

// code here
// Part 1:
// Old way just for practice.

function User(options) {
this.email = options.email;
this.password = options.password;
}

User.prototype.comparePasswords = function (newPassword) {
return(this.password === newPassword);
};

const user = new User('[email protected]', 'asdf')

const result = user.comparePasswords('qwer');
console.log(result)

// New way.

Class User {
constructor(options) {
this.email = options.email;
this.password = options.password;
}
comparePasswords(newPassword) {
return(this.password === newPassword);
}
}

// Part 2
// Create a class called `Animal` and a class called `Cat` using ES6 classes.
Expand All @@ -19,7 +46,26 @@
// `meow` that should return the string `<name> meowed!` where `<name>` is the `name`
// property set on the Cat instance.

// code here
// Part 2:

Class Animal {
constructor(options) {
this.age = options.age;
}
growOlder() {
return(this.age);
}
}

Class Cat extends Animal {
constructor(options) {
super(options);
this.name = options.name;
}
moew() {
return(`${this.name} meowed!`)
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@sperrye sperrye Oct 24, 2017

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You don't need to wrap this in parenthesis

}
}

/* eslint-disable no-undef */

Expand Down
56 changes: 54 additions & 2 deletions src/prototype.js
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
/*
Object oriented design is commonly used in video games. For this part of the assignment
you will be implementing several classes with their correct inheritance heirarchy.

you will be implementing several classes with their correct inheritance heirarchy
In this file you will be creating three classes:
GameObject
createdAt
Expand Down Expand Up @@ -56,3 +56,55 @@ module.exports = {
NPC,
Humanoid,
};

function GameObject(options) {
this.createAt = options.createAt;
this.dimensions = options.dimensions;
}

GameObject.prototype.destroy = function() {
return('Game object was removed from the game.');
};

function NPC(options) {
GameObject.call(this, options);
this.hp = options.hp;
this.name = options.name;
}

NPC.prototype = Object.create(GameObject.prototype);
NPC.prototype.takeDamage = function() {
return(`${this.name} took damage.`);
};

function Humanoid(options) {
NPC.call(this, options);
this.faction = options.faction;
this.weapons = options.weapons;
this.language = options.language;
}

Humanoid.prototype = Object.create(NPC.prototype);
Humanoid.prototype.greet = function() {
return(`${this.name} offers a greeting in ${this.language}`);
};

const hamsterHuey = new Humanoid({
createdAt: new Date(),
dimensions: {
length: 2,
width: 1,
height: 1,
},
hp: 5,
name: 'Hamster Huey',
faction: 'Gooey Kablooie',
weapons: [
'bubblegum',
],
language: 'Hamsterish',
});

hamsterHuey.greet();
hamsterHuey.takeDamage();
hamsterHuey.destroy();
8 changes: 8 additions & 0 deletions src/recursion.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3,11 +3,19 @@
const nFibonacci = (n) => {
// fibonacci sequence: 1 2 3 5 8 13 ...
// return the nth number in the sequence
if (n < 2) return (1);
return nFibonacci(n - 1) + nFibonacci(n - 2);
};

const nFactorial = (n) => {
// factorial example: !5 = 5 * 4 * 3 * 2 * 1
// return the factorial of `n`
if (n === 1) return (n);
let answer = 1;
for (let i = 1; i <= n; i++) {
(answer *= i);
}
return answer;
};

/* Extra Credit */
Expand Down
11 changes: 10 additions & 1 deletion src/this.js
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Expand Up @@ -6,8 +6,14 @@

class User {
constructor(options) {
// set a username and password property on the user object that is created
this.username = options.username;
this.password = options.password;
}
checkPassword(check) {
return (this.password === check);
}
// set a username and password property on the user object that is created

// create a method on the User class called `checkPassword`
// this method should take in a string and compare it to the object's password property
// return `true` if they match, otherwise return `false`
Expand All @@ -33,7 +39,10 @@ const checkPassword = function comparePasswords(passwordToCompare) {
// use .call, .apply, and .bind

// .call
checkPassword.call(me, 'correcthorsebatterystaple');

// .apply
checkPassword.apply(me, ['correcthorsebatterystaple']);

// .bind
const check = checkPassword.bind(me);