AleksandrovHomeWork/simpleTasks/index.js

let taskName = prompt('Введите названия задания', '');
switch(taskName) {
    case 'assign: evaluation':
        let a = 5;  
        let b, c;
        b = (a * 5);  
        b = (c = (b/2)); 
        console.log(b);
    break;
    
    case 'semicolon: error':
        console.log("n") //;
        (function() {
            console.log("n")
        }());
    break;

    case 'Number: age':
        const age = +prompt('Enter your age');
        const date = new Date();
        alert(date.getFullYear() - age);
    break;

    case 'Number: temperature':
        const temp = +prompt('Enter temperature in degrees celsius', '');
        alert(((temp * 9/5) + 32).toFixed(2));
    break;

    case 'Number: divide':
        const d = +prompt('Enter number',0);
        const e = +prompt('Enter number',0);
        (function (d, e) {
            alert(Math.floor(d / e));
        })(d, e);
    break;

    case 'Number: odd':
        const str = prompt('Enter some number', '');
        const num = +str;
        if (isNaN(num) || typeof num !== 'number' || str === '') {
            alert('Error')
        } else {
            if (num % 2 === 0) {
                alert('Even!')
            } else {
                alert('Odd!')
            }
        }; 
    break;

    
    case 'String: greeting':
        const userName = prompt('What is your name?','');
        alert(`Hello, ${userName}`);
    break;
    
    case 'String: lexics':
        let text = prompt('Enter some text', '');
        const badWords = ['some', 'bad', 'words'];
        for (let i = 0; i < badWords.length; i++) {
            if (text.includes(badWords[i])) {
                alert('Why so rude')
                break;
            }
        };
    break;

    case 'Boolean: if':
        const questions = ['Are you studying Javaskipt?', 'Maybe you know some other programming language?'];
        let answers = [];
        let answer1 = confirm(questions[0]);
        // let answer2 = confirm(questions[1]);
        if(answer1) {
            alert('Great!');
        } else {
            alert('Perfect!');
        };
    break;

    case 'Array: booleans': 
        for (let i = 0; i < questions.length; i++) {
            let answer = confirm(questions[i]);
            answers.push(answer);
        };
        console.log(answers);
    break;

    case 'Array: plus': 
        let arr = [2,3];
        arr[2] = arr[0] + arr[1]; 
        console.log(arr);
    break;

    case 'Array: plus string':
        let array = ['Some', 'simple', 'strings'];
        console.log(arr.join(''));
    break;

    case 'Object: real':
        let myPC = {
                CPU: 'Intel Core i5',
                GPU: 'Radeon RX570',
                MB: 'Asus b360',
                RAM: 'Corsair 16Gb'
            };
    break;

    case 'Object: change':
        myPC['CPU'] = 'Intel Core i5 9400f';
        myPC.RAM = 'Corsair Vengeance RGB 16Gb';
        console.log(myPC);
    break;

    case 'Ternary':
        confirm('Are u man?') ? alert('U man') : alert('U woman');
    break;

    case 'Comparison: sizes':
            let clothes = {
                ru: {
                    sizes: [40,42,44,46,48,50,52,54]
                },

                usa: {
                    sizes: [6,8,10,12,14,16,18,20]
                }
            };
            let size = +prompt('Enter your size', '');
            let index;
            for (let i = 0; i < clothes.ru.sizes.length; i++) {
                if (size === clothes.ru.sizes[i]) {
                    index = i;
                };
            };
            alert(clothes.usa.sizes[index]);
    break;

    case 'switch: if': 
        let color = prompt("Введите цвет","");
        if (color === 'red') {
            document.write("<div style='background-color: red;'>красный</div>");
        } else if (color === 'black') {
            document.write("<div style='background-color: black; color: white;'>черный</div>");
        } else if (color === 'blue') {
            document.write("<div style='background-color: blue;'>синий</div>");
        } else if (color === 'green') {
            document.write("<div style='background-color: green;'>зеленый</div>");
        } else {
            document.write("<div style='background-color: gray;'>Я не понял</div>");
        }
    break;

    // case 'prompt: or':
    //     const age = prompt('Enter your age','');
    //     if (age === '' || age === null) {
    //         alert('Error');
    //     } else {
    //         const date = new Date();
    //         alert(date.getFullYear() - age);    
    //     };
    // break;

    case 'confirm: or this days':
        let shoping = confirm('shoping?');
        if (!shoping) {
            alert('You b9ka');
        };
    break;

    // case 'triple prompt default: or': 
    //     let lastName = prompt('Enter your lastName', '') || 'Ivanov';
    //     let firstName = prompt('Enter your firstName', '') || 'Ivan';
    //     let patronymic = prompt('Enter your patronymic', '') || 'Ivani4';
    //     alert(`${firstName} ${lastName} ${patronymic}`);
    // break;

    case 'default: if':
        let lastName = prompt('Enter your lastName', '');
        let firstName = prompt('Enter your firstName', '');
        let patronymic = prompt('Enter your patronymic', '');
        if (!lastName) {
            lastName = 'Ivanov';
        };
        if (!firstName) {
            firstName = 'Ivan';
        };
        if (!patronymic) {
            patronymic = 'Ivani4';
        };
        alert(`${firstName} ${lastName} ${patronymic}`);
    break;

    case 'login and password':
        let user = {
            login: 'admin',
            pass: 'qwerty'
        };
        (function auth () {
            let login = prompt('Enter your login','');
            let pass = prompt('Enter your pass','');

            if (login === user.login && pass === user.pass) {
                alert('Congats!');
            } else {
                alert('Error!');
            }
        })();
    break;

    case 'scissors':
        let yourValue = prompt('Камень, ножницы или бумага?', '').toLowerCase();

        let values = ['камень', 'ножницы', 'бумага'];

        let pcValue = (Math.random() * 2).toFixed();
        let pcStringValue = values[pcValue];

        if (yourValue === pcStringValue) {
            alert('Ничья');
        };

        if (yourValue === 'ножницы') {
            if (pcStringValue === 'бумага') {
                alert(pcStringValue);
                alert('Вы победили');
            };
            if (pcStringValue === 'камень') {
                alert(pcStringValue);
                alert('Вы проиграли');
            };
        };
        if (yourValue === 'камень') {
            if (pcStringValue === 'ножницы') {
                alert(pcStringValue);
                alert('Вы победили');
            };
            if (pcStringValue === 'бумага') {
                alert(pcStringValue);
                alert('Вы проиграли');
            };
        };
        if (yourValue === 'бумага') {
            if (pcStringValue === 'камень') {
                alert(pcStringValue);
                alert('Вы победили');
            };
            if (pcStringValue === 'ножницы') {
                alert(pcStringValue);
                alert('Вы проиграли');
            };
        };
    break;

    case 'comparison if':
        var myAge = +prompt("Сколько вам лет?","");

        if (myAge < 18) {
            alert("школьник"); 
        } 
        else {
            if (myAge < 30) {
                alert("молодеж");
            }
            else {
                if (myAge < 45) {
                    alert("зрелость");
                }
                else {
                    if (myAge < 60) {
                        alert("закат") 
                    }
                    else {
                        if (myAge > 60) {
                            alert("как пенсия?");
                        }
                        else {
                            alert("то ли киборг, то ли ошибка"); 
                        }
                    }
                }
            }
        }
    break
};