- Finished all level 1 and 2 exercises for day 8 - Finished averageRating function for Level 3 Exercises section. - Finished Exercises Level 3, Exercise 1 - Need to finish Exercises Level 3, Exercises 2 ,3, and 4pull/882/head
Brendan Klein
2 years ago
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1f88dfe0e7
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6c521165ad
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console.log(countries)
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alert('Open the console and check if the countries has been loaded')
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//Exercises Level 1
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//Exercise 1 -- Create an empty object called dog
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let dog = {};
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//Exercise 2 -- Print the the dog object on the console
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console.log(dog);
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//Exercise 3 -- Add name, legs, color, age and bark properties for the dog object. The bark property is a method which return woof woof
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dog = {
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name: "Sam",
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age: 2,
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legs: 4,
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color: 'Golden',
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bark: function () {
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return "WOOF WOOF";
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}
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};
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console.log(dog);
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//Exercise 4 -- Get name, legs, color, age and bark value from the dog object
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console.log(`Dogs name: ${dog.name}, age: ${dog.age}, legs: ${dog.legs}, color: ${dog.color}, bark value: ${dog.bark()}`);
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//Exercise 5 -- Set new properties the dog object: breed, getDogInfo
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dog.breed = "Golden Retriever";
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dog.getDogInfo= function()
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{
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console.log(`My dog's name is ${dog.name} he is a ${dog.color}, ${dog.breed}. He has ${dog.legs} legs and his age is ${dog.age} years old`);
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}
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dog.getDogInfo();
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// Exercises Level 2
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const users2 = {
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Alex: {
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email: 'alex@alex.com',
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skills: ['HTML', 'CSS', 'JavaScript'],
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age: 20,
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isLoggedIn: false,
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points: 30
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},
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Asab: {
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email: 'asab@asab.com',
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skills: ['HTML', 'CSS', 'JavaScript', 'Redux', 'MongoDB', 'Express', 'React', 'Node'],
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age: 25,
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isLoggedIn: false,
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points: 50
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},
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Brook: {
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email: 'daniel@daniel.com',
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skills: ['HTML', 'CSS', 'JavaScript', 'React', 'Redux'],
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age: 30,
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isLoggedIn: true,
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points: 50
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},
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Daniel: {
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email: 'daniel@alex.com',
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skills: ['HTML', 'CSS', 'JavaScript', 'Python'],
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age: 20,
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isLoggedIn: false,
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points: 40
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},
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John: {
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email: 'john@john.com',
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skills: ['HTML', 'CSS', 'JavaScript', 'React', 'Redux', 'Node.js'],
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age: 20,
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isLoggedIn: true,
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points: 50
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},
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Thomas: {
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email: 'thomas@thomas.com',
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skills: ['HTML', 'CSS', 'JavaScript', 'React'],
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age: 20,
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isLoggedIn: false,
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points: 40
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},
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Paul: {
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email: 'paul@paul.com',
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skills: ['HTML', 'CSS', 'JavaScript', 'MongoDB', 'Express', 'React', 'Node'],
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age: 20,
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isLoggedIn: false,
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points: 40
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}
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}
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//Exercise 1 -- Find the person who has the most skills in the users object.
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function getMostSkills()
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{
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let max = Number.MIN_SAFE_INTEGER;
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let res = undefined;
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for (const key in users2)
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{
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const user = users2[key];
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if (user.skills.length > max)
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{
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max = user.skills.length;
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res = user;
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}
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}
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return res;
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}
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console.log(getMostSkills());
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//Exercise 2 -- Count logged in users, count users having greater than or equal to 50 points from the following object.
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//Uses same users object as Exercise Level 2, Exercise 1
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function countLoggedInUsers()
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{
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let loggedInUserCount = 0;
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let greaterThen50Points = 0;
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for(const key in users2)
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{
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const user = users2[key];
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if(user.isLoggedIn)
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loggedInUserCount=loggedInUserCount+1;
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else if(user.points>=50)
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greaterThen50Points=greaterThen50Points+1;
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}
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console.log(`Number of logged in users: ${loggedInUserCount}`);
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console.log(`Number of users having over greater then or equal to 50 points: ${greaterThen50Points}`);
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}
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countLoggedInUsers();
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//Exercise 3 -- Find people who are MERN stack developer from the users object
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function MERNstack() {
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const requiredSkills = ['mongodb', 'express', 'react', 'node'];
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for (const username in users2) {
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const user = users2[username];
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let hasAllRequiredSkills = true;
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for (let i = 0; i < requiredSkills.length; i++) {
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const requiredSkill = requiredSkills[i].toLowerCase(); // Convert to lowercase
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let hasRequiredSkill = false;
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for (let j = 0; j < user.skills.length; j++) {
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const userSkill = user.skills[j].toLowerCase(); // Convert user's skill to lowercase
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if (userSkill === requiredSkill) {
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hasRequiredSkill = true;
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break; // Skill found, no need to continue searching
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}
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}
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if (!hasRequiredSkill) {
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hasAllRequiredSkills = false;
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break; // Exit the loop as soon as one required skill is missing
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}
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}
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if (hasAllRequiredSkills) {
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console.log(`${username} is a MERN developer`);
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}
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}
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}
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MERNstack();
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//Exercise 4 -- Set your name in the users object without modifying the original users object
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const newUser = {
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Brendan: {
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email: 'deliveritthere@gmail.com',
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skills: ['HTML', 'CSS', 'JavaScript','Mongodb','Express','React','Node'],
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age: 23,
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isLoggedIn: true,
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points: 15
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}
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};
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const updatedUsers = { ...users2, ...newUser };
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//Exercise 5 -- Get all keys or properties of users object
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const keys = Object.keys(users2);
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console.log(keys);
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//Exercise 6 -- Get all the values of users object
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let valuesArray = Object.values(users2);
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for (let value of valuesArray)
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{
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console.log(value);
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}
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//Exercise 7 -- Use the countries object to print a country name, capital, populations and languages.
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console.log(`name: ${countries[0].name}, capital: ${countries[0].capital}, population: ${countries[0].population}, languages: ${countries[0].languages}`);
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// Exercises: Level 3
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//Exercise 1 -- Create an object literal called personAccount. It has firstName, lastName, incomes, expenses properties and it has totalIncome, totalExpense, accountInfo, addIncome, addExpense and accountBalance methods. Incomes is a set of incomes and its description and expenses is a set of incomes and its description.
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const personAccount = {
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firstName: 'Brendan',
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lastName: 'Klein',
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incomes: { salary: 100000, sidehustle: 120 },
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expenses: { dte: 200, consumers: 50, water: 20, trash: 0 },
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addIncome:function(description, amount)
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{
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personAccount.incomes[description]=amount;
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},
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addExpenses:function(description, amount)
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{
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personAccount.expenses[description]=amount;
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},
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totalIncome:function()
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{
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let totalIncome=0;
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for(income in personAccount.incomes)
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{
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totalIncome = totalIncome + personAccount.incomes[income];
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}
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return totalIncome;
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},
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totalExpenses:function()
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{
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let totalExpenses = 0;
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for(expense in personAccount.expenses)
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{
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totalExpenses = totalExpenses + personAccount.expenses[expense];
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}
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return totalExpenses;
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},
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accountBalance:function()
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{
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let accountBalance = personAccount.totalIncome() - personAccount.totalExpenses();
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return accountBalance;
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},
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accountInfo:function()
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{
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console.log(`First name: ${personAccount.firstName}`);
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console.log(`Last name: ${personAccount.lastName}`);
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console.log(`Total Income: ${personAccount.totalIncome()}`);
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console.log(`Total Expenses ${personAccount.totalExpenses()}`);
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console.log(`Account Balance ${personAccount.accountBalance()}`);
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}
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}
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personAccount.accountInfo();
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//Exercise 2 -- ***** Questions:2, 3 and 4 are based on the following two arrays:users and products ()
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const users = [
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{
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_id: 'ab12ex',
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username: 'Alex',
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email: 'alex@alex.com',
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password: '123123',
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createdAt:'08/01/2020 9:00 AM',
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isLoggedIn: false
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},
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{
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_id: 'fg12cy',
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username: 'Asab',
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email: 'asab@asab.com',
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password: '123456',
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createdAt:'08/01/2020 9:30 AM',
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isLoggedIn: true
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},
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{
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_id: 'zwf8md',
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username: 'Brook',
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email: 'brook@brook.com',
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password: '123111',
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createdAt:'08/01/2020 9:45 AM',
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isLoggedIn: true
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},
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{
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_id: 'eefamr',
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username: 'Martha',
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email: 'martha@martha.com',
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password: '123222',
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createdAt:'08/01/2020 9:50 AM',
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isLoggedIn: false
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},
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{
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_id: 'ghderc',
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username: 'Thomas',
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email: 'thomas@thomas.com',
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password: '123333',
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createdAt:'08/01/2020 10:00 AM',
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isLoggedIn: false
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}
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];
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const products = [
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{
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_id: 'eedfcf',
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name: 'mobile phone',
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description: 'Huawei Honor',
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price: 200,
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ratings: [
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{ userId: 'fg12cy', rate: 5 },
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{ userId: 'zwf8md', rate: 4.5 }
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],
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likes: []
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},
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{
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_id: 'aegfal',
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name: 'Laptop',
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description: 'MacPro: System Darwin',
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price: 2500,
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ratings: [],
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likes: ['fg12cy']
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},
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{
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_id: 'hedfcg',
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name: 'TV',
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description: 'Smart TV:Procaster',
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price: 400,
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ratings: [{ userId: 'fg12cy', rate: 5 }],
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likes: ['fg12cy']
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}
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]
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// Imagine you are getting the above users collection from a MongoDB database.
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//a. Create a function called signUp which allows user to add to the collection. If user exists, inform the user that he has already an account.
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// function signUp(username, email, password)
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// {
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// if(Object.values(users).includes(username) && Object.values(users).includes(email))
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// return "The username provided already has an account"
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// else
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// {
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// Object.assign({},users,{'_id': 123456, 'username': username});
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// }
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// console.log(users);
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// }
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// signUp('bklein', 'deliveritthere@gmail.com', '12385');
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// b. Create a function called signIn which allows user to sign in to the application
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users.signIn = function()
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{
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}
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//Exercise 3 -- The products array has three elements and each of them has six properties.
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//a. Create a function called rateProduct which rates the product
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products.rateProduct = function(name, rating)
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{
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}
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//b. Create a function called averageRating which calculate the average rating of a product
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products.averageRating = function()
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{
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console.log(`------------------------------------------------------------------------------------`);
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for(item in products)
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{
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let numRatings = 0;
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let addRatings = 0;
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let itemName = products[item].name;
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for(rate in products[item].ratings)
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{
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addRatings = addRatings + products[item].ratings[rate].rate;
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numRatings = numRatings+1;
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}
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addRatings = addRatings / numRatings;
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if(itemName == "")
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continue;
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if(isNaN(addRatings))
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addRatings="No ratings for that product!";
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console.log(`${itemName} has an average rating of: ${addRatings}`);
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}
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console.log(`------------------------------------------------------------------------------------`);
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}
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products.averageRating();
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//Exercise 4 -- Create a function called likeProduct. This function will helps to like to the product if it is not liked and remove like if it was liked.
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