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‎challenges/functions.js‎

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Original file line numberDiff line numberDiff line change
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// Step 1: Create a higher-order function that will accept 3 parameters. The first two can take any argument. The last is your callback. This function should return your callback that passed the first two parameters as its argument.
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function consume(x, y, cb) {
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return cb(x, y);
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}
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/* Step 2: Create several functions that you will callback with the previous higher order function.
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The first will return the sum of two numbers.
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The second will return the product of two numbers.
@@ -18,5 +22,78 @@ The eleventh will return whether the firstNumber is less than or equal to the se
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The twelvth will return whether the firstNumber is equivalent to the secondNumber.
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The thirteenth will return a string 'Hey the number is firstNumber' if firstNumber is greater than the secondNumber. If it isn't, return a string 'Hey the number is secondNumber'
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*/
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function add(num1, num2) {
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return num1 + num2;
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}
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// The second will return the product of two numbers.
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function multiply(num1, num2) {
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return num1 * num2;
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}
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// The third will return the modulus of the two numbers.
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function remainder(num1, num2) {
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return num1 % num2;
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}
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// The fourth will return the quotient of the two numbers.
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function divide(num1, num2) {
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return num1/num2;
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}
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// The fifth will return the square root of the two numbers.
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function square(num1, num2) {
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let var1 = Math.sqrt(num1);
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let var2 = Math.sqrt(num2);
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// return var1 + " " + var2;
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return `${var1} ${var2}`;
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}
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// The sixth will accept a first and last name and return 'Hey, firstName lastName, youre a wicked cool dev'.
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function stringReturn(firstName, lastName) {
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return `Hey, ${firstName} ${lastName}, youre a wicked cool dev`;
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}
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// The seventh will return whether the firstString is included the secondString.
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function stringIncludes(firstString, secondString) {
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return secondString.includes(firstString);
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}
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// The eigth will return whether the firstNumber is greater than the secondNumber.
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function numCompare1(x, y) {
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return x > y;
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}
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// The ninth will return whether the firstNumber is less than the secondNumber.
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function numCompare2(x,y) {
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return x < y;
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}
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// The tenth will return whether the firstNumber is greater than or equal to the secondNumber.
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function numCompare3(x,y) {
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return x >= y;
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}
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// The eleventh will return whether the firstNumber is less than or equal to the secondNumber.
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function numCompare4(x,y) {
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return x <= y;
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}
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// The twelvth will return whether the firstNumber is equivalent to the secondNumber.
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function numCompare5(x,y) {
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return x === y;
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}
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// The thirteenth will return a string 'Hey the number is firstNumber' if firstNumber is greater than the secondNumber. If it isn't, return a string 'Hey the number is secondNumber'
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function numCompare6(x, y) {
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if(x > y) {
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return `Hey the number is ${x}`;
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} else {
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return `Hey the number is ${y}`;
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}
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}
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// Step 3: Check your work using console.log and invoke your higher order function.
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console.log(consume(1, 2, add), "This is to add");
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console.log(consume(2, 2, multiply));
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console.log(consume(2, 3, remainder));
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console.log(consume(2, 4, divide));
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console.log(consume(4, 16, square));
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console.log(consume('bob', 'bobbington', stringReturn));
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console.log(consume('bob', 'bob went to the store', stringIncludes));
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console.log(consume(2,5, numCompare1));
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console.log(consume(2,5, numCompare2));
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console.log(consume(2,5, numCompare3));
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console.log(consume(2,5, numCompare4));
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console.log(consume(2,5, numCompare5));
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console.log(consume(2,5, numCompare6));

‎challenges/objects-arrays.js‎

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@@ -7,7 +7,43 @@
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// Object 2 -- tiger, carnivorous, 400lb, 6ft, india
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// Object 3 -- koala, herbivorous, 40lb, 3ft, australia
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let dog = {
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name: 'dog',
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diet: 'omnivorous',
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weight: 25,
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length: '2ft',
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area: 'worldwide',
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bark: function() {
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return "Woof!";
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}
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};
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let tiger = {
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name: 'tiger',
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diet: 'carnivorous',
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weight: 400,
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length: '6ft',
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area: 'India',
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hunt: function() {
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if (Math.floor(Math.random() * 10) > 7) {
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this.weight += 5;
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return 'Tiger hunt successful';
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} else {
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this.weight -= 5;
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return 'Tiger hunt failed';
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}
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}
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};
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let koala = {
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name: "koala",
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diet: "herbivorous",
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weight: 40,
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length:"3ft",
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area: "australia",
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climb: function() {
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this.weight += 1;
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return "Eucalyptus is great!";
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}
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};
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/* Using the console, log the following
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How much the dog weighs
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What is the length of all 3 objects
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*/
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console.log(dog.weight);
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console.log(tiger.diet);
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console.log(koala.area);
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console.log(`Dog: ${dog.length}, Tiger: ${tiger.length}, Koala: ${koala.length}`);
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// Create a new bark method for the dog. When called, return "Woof!"
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// Create a new hunt method for the tiger. When called, if Math.random(10) is greater than 7, return "Tiger hunt successful" and add 5lb to the weight. If it is not, return "Tiger goes hungry" and subtract 5lbs to the weight.
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// Create a new climb method for the koala. When called, return "Eucalyptus is great"
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console.log(dog.bark());
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console.log(tiger.hunt(), tiger.weight);
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console.log(koala.climb(), koala.weight);
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// Arrays
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// Given this array of game characters, complete the following tasks
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// Step 1: Create a new array that will contain all games. Once you have it made, sort it ascending[A-Z]. Log the result. Solve two ways:
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// For Loop
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let newArr = [];
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for(let i =0; i < gameCharacters.length; i++) {
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newArr.push(gameCharacters[i].game);
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}
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newArr.sort();
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console.log(newArr);
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// Map or forEach
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let newArr2 = gameCharacters.map(character => character.game).sort();
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// let newArr2 = gameCharacaters.map(function(character) { return character.game;});
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console.log(newArr2, "mapping");
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let newArr3 = [];
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gameCharacters.forEach(character => {
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newArr3.push(character.game);
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});
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newArr3.sort();
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console.log(newArr3, 'foreach');
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// Step 2: Create a new array that will contain the name and mission of each character.Log the result. Solve two ways:

‎challenges/prototypes.js‎

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// Task: You are to build a pentagonal pyramid that can return values for its volume as well as its surface areas. Follow the steps to achieve this.
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// Step 1: Base Constructor -- You should create a constructor function names PentagonalPyramid that will accept properties for its base edge, and heights.
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function PentagonalPyramid(attr) {
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this.edge = attr.edge;
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this.height = attr.height;
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}
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// Step 2: Volume Method -- You should create a prototype for PentagonalPyramid that returns the volume of a pentagonal pyramid. Curious about the formula??? Use Google (A DEVELOPERS BEST FRIEND)
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// Step 2: Volume Method -- You should create a prototype for PentagonalPyramid that returns the volume of a pentagonal pyramid. Curious about the formula??? Use Google (A DEVELOPERS BEST FRIEND
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PentagonalPyramid.prototype.volume = function() {
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let formulaVolume = ((5/12)*(Math.sin(54)/Math.cos(54)))*(this.height)*(Math.pow(this.edge, 2));
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return formulaVolume;
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}
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// Step 3: Surface Area Method -- You should create a prototype fro PentagonalPyramid that returns the surface area of a pentagonal pyramid. Curious about the formula??? Use Google (A DEVELOPERS BEST FRIEND)
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PentagonalPyramid.prototype.surfaceArea = function() {
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// let formulaSurfaceArea = ((5/4) * (Math.sin(54)/Math.cos(54)) * (this.edge * this.edge)) + (((5*this.edge)/2) * Math.sqrt((this.height * this.height) + (((this.edge * (Math.sin(54)/Math.cos(54)))/2)**);
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let formulaSurfaceArea = 5
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return formulaSurfaceArea;
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}
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console.log(PentagonalPyramid, "Constructor");
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// Step 4: New Object -- You should create a new object that uses PentagonalPyramid. Give it the length, width, and height.
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const pyramid = new PentagonalPyramid( {
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'edge': 5,
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'height': 2
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});
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// Test your volume and surfaceArea methods here using console.log
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console.log(pyramid);
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console.log(pyramid.volume());
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console.log(pyramid.surfaceArea());

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