Jose Linardo
3 years ago
parent
20f7813506
commit
cb12fc2c65
@ -1,2 +1,369 @@
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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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//alert('Open the console and check if the countries has been loaded')
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//1. Create an empty object called dog
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const dog = new Object()
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//2.Print the the dog object on the console
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console.log(dog)
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//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.name = 'Tobby'
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dog.legs = 4
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dog.color = 'brown'
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dog.age = 1
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dog.bark = function(){
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return 'woof woof'
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}
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console.log(dog)
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//4.Get name, legs, color, age and bark value from the dog object
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const entries = Object.values(dog)
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console.log(entries)
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//5.Set new properties the dog object: breed, getDogInfo
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dog.breed = 'mix'
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dog.getDogInfo = function(){
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return `${this.name} ${this.color} ${this.breed}`
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}
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console.log(dog.getDogInfo())
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console.log(dog)
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// Exercises: Level 2
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//1.Find the person who has many skills in the users object.
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const users = {
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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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console.log(users)
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const usersIds = Object.keys(users)
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const userSkills = [];
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for(user in usersIds ){
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userSkills[user] = users[usersIds[user]].skills.length
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}
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console.log(users[usersIds[user]].skills.length)
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const maxUsersSkills = () => {
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console.log(userSkills)
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const max = Math.max(...userSkills)
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for(user in usersIds){
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if(userSkills[user]== max)
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return `User with maximun Skills is ${usersIds[user]} `
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}
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}; console.log(maxUsersSkills())
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//2.Count logged in users, count users having greater or equal to 50 points from the following object.
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function countLogsAndPoints () {
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const userIds = Object.keys(users);
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let countLoggedIn = 0;
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let countUserPoints = 0
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for (user in userIds) {
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if (users[userIds[user]].isLoggedIn == true) {
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countLoggedIn++;
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}
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if(users[userIds[user]].points >= 50 ){
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countUserPoints++
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}
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}
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return `Users logged are ${countLoggedIn}, Users points greater or equal to 50 are ${countUserPoints} `
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}; console.log(countLogsAndPoints())
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//3. Find people who are MERN stack developer from the users object
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function whoAreMern () {
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mernDev = []
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const usersIds =Object.keys(users)
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for(user in usersIds){
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usersSkills = users[usersIds[user]].skills
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if(usersSkills.includes('MongoDB' && 'Express' && 'React' && 'Node')){
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mernDev.push(usersIds[user])
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}
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}; return mernDev.join(', ')
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}; console.log(whoAreMern())
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//4. Set your name in the users object without modifying the original users object
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let newUsers = {...users}
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newUsers.Jose = {
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email: 'jose@gmail.com',
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skills: ['HTML', 'CSS', 'JavaScript'],
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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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console.log(newUsers)
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//5. Get all keys or properties of users object
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const entriesNewUsers = Object.entries(users)
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console.log(entriesNewUsers)
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//6. Get all the values of users object
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const values = Object.values(users)
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console.log(values)
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//7. Use the countries object to print a country name, capital, populations and languages.
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for (let i = 0; i < countries.length; i++) {
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let name = countries[i]['name'];
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let capital = countries[i]['capital'];
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let population = countries[i]['population'];
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let languages = countries[i]['languages'];
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console.log(`${name}, ${capital}, ${population}, ${languages}`);
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}
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// Exercises: Level 3
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//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: 'Jane',
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lastName: 'Doe',
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incomes: {
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salary: 5000,
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onlinecourses: 15000,
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parttime: 1000
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},
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expenses: {
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groceries: 1500,
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bills: 3000
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},
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getTotalIncomes(){
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const incomesFrom = Object.keys(this.incomes);
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let addIncomes = 0;
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for (let i = 0; i < incomesFrom.length; i++){
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addIncomes += this.incomes[incomesFrom[i]]
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};
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return addIncomes;
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},
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getTotalExpenses () {
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const expensesFrom = Object.values(this.expenses);
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return expensesFrom.reduce((acc, curr) => acc + curr);
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}
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};
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console.log(personAccount.getTotalIncomes());
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console.log(personAccount.getTotalExpenses());
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//2.**** Questions:2, 3 and 4 are based on the following two arrays:users and products ()
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const usersArr = [
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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. 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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//b. Create a function called signIn which allows user to sign in to the application
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//let userNameInput = prompt('Enter your first name.')
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function signUp() {
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const usernames = [];
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for (let i = 0; i < usersArr.length; i++) {
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usernames.push(usersArr[i].username);
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}
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if (usernames.includes(userNameInput)) {
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console.log(`${userNameInput} already exist.`);
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} else {
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signIn();
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}
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}
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function signIn() {
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const newUser = {};
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newUser._id = generateId();
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newUser.username = userNameInput
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newUser.email = prompt('Enter your email address.');
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newUser.password = prompt('Set your password.', '6 digits of number');
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newUser.createdAt = generateTime();
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newUser.isLoggedIn = true;
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usersArr.push(newUser);
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}
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function generateId() {
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let possible = 'abcdefghijklmnopqrstuvwxyz0123456789';
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const id = [];
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for (let i = 0; i < 6; i++) {
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id.push(possible.charAt(Math.floor(Math.random() * possible.length)));
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}
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return id.join('');
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}
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const generateTime = () => {
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const now = new Date()
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const day = `${(now.getDate())}`.padStart(2,'0');
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const month = `${(now.getMonth()+1)}`.padStart(2,'0');
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const year = now.getFullYear();
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const date = now.getDate();
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const minutes = now.getMinutes()
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const hours = now.getHours()
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return `${day}/${month}/${year}/${hours}:${minutes}`
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}
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//console.log(signUp());
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console.log(usersArr)
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/*let userNameInput = "Enteryour firstname".replace(/\s/g, '_')
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console.log(userNameInput)*/
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//3.The products array has three elements and each of them has six properties. a. Create a function called rateProduct which rates the product b. Create a function called averageRating which calculate the average rating of a product
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//a.
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function rateProduct(name) {
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for (let i = 0; i < products.length; i++) {
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if (products[i].name == name) {
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return products[i].ratings;
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}
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}
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}
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console.log(rateProduct('mobile phone'));
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function averageRating(name) {
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let ratingArr = rateProduct(name);
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if (ratingArr.length === 0) {
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console.log('Ratings not found');
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} else if (ratingArr.length) {
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let rateSum = 0;
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for (let i = 0; i < ratingArr.length; i++) {
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rateSum += ratingArr[i].rate;
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}
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console.log(rateSum / ratingArr.length);
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}
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}
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averageRating('mobile phone');
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averageRating('Laptop')
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averageRating('TV')
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//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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/*function currentUser() {
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let userNameInput = prompt('Enter your first name.');
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for (let i = 0; i < users.length; i++) {
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if (users[i].username === userNameInput) {
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let userId = users[i]._id;
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return userId;
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}
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}
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}*/
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