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@@ -0,0 +1,252 @@
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+let task = prompt('enter task name').toLowerCase();
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+
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+switch (task) {
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+ case 'switch: sizes':
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+ let size = +prompt('введите размер обуви дял конвертации в UK')
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+ switch (size) {
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+ case 35:
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+ alert(3.5);
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+ break;
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+ case 36:
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+ alert(4);
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+ break;
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+ case 37:
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+ alert(5);
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+ break;
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+ case 38:
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+ alert(6);
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+ break;
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+ case 39:
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+ alert(6.5);
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+ break;
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+ case 40:
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+ alert(7);
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+ break;
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+ default:
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+ alert('something went wrong')
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+ }
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+ break;
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+
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+ case 'switch: if':
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+ let color = prompt("Введите цвет","");
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+ if(color === "red") {
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+ document.write("<div style='background-color: red;'>красный</div>")
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+ } else if(color === "black") {
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+ document.write("<div style='background-color: black; color: white;'>черный</div>")
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+ } else if(color === "blue") {
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+ document.write("<div style='background-color: blue;'>синий</div>")
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+ } else if(color === "green") {
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+ document.write("<div style='background-color: green;'>зеленый</div>")
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+ } else {
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+ document.write("<div style='background-color: gray;'>Я не понял</div>")
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+ }
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+ break;
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+
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+ case 'prompt: or':
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+ let age1 = prompt('how old are you?');
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+ if(age1 === '' || age1 === null) {
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+ alert('something is wrong...')
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+ } else {
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+ alert(`you were born in ${2022 - age1}`)
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+ }
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+ break;
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+
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+ case 'confirm: or this days':
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+ let question1 = confirm('Шоппинг?') || alert(' Ты - бяка!');
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+ break;
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+
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+ case 'confirm: if this days':
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+ let question2 = confirm('Шоппинг?');
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+ if(!question2) {
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+ alert(' Ты - бяка!')
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+ }
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+ break;
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+
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+ case 'triple prompt':
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+ let surname = prompt('Enter surname')
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+ let name = prompt('Enter name')
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+ let patronymic = prompt('Enter patronymic')
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+
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+ alert(`${surname} ${name} ${patronymic}`)
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+ break;
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+
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+ case 'default: or':
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+ let enteredName = prompt('enter your name');
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+ let enteredSurname = prompt('enter your surname');
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+
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+ enteredName = enteredName || 'Ivan';
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+ enteredSurname = enteredSurname || 'Ivanov';
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+ break;
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+
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+ case 'default: if':
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+ let enteredName2 = prompt('enter your name');
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+ let enteredSurname2 = prompt('enter your surname');
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+ if(!enteredSurname2) {
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+ enteredSurname2 = 'Ivanov'
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+ }
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+ if(!enteredName2) {
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+ enteredName2 = 'Ivan'
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+ }
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+ break;
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+
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+ case 'login and password':
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+ const adminName = 'admin';
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+ const adminPassword = 'qwerty';
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+ let login = prompt('Login: ');
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+
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+ if(adminName === login) {
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+ let password = prompt('Password: ');
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+ if(adminPassword === password) {
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+ alert('Success!')
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+ } else {
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+ alert('password is incorrect')
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+ }
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+ } else {
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+ alert('login is incorrect')
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+ }
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+ break;
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+
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+ case 'currency calc':
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+ let currency1 = prompt('USD or EUR?')
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+ let rate1;
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+ switch (currency1) {
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+ case 'usd':
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+ rate1 = 34.67
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+ break;
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+ case 'eur':
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+ rate1 = 37.38
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+ break;
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+ default:
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+ rate1 = 0;
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+ }
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+ let uah = +prompt('enter UAH to convert');
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+ alert(`${(uah / rate1).toFixed(2)} ${currency1}`)
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+ break;
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+
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+ case 'currency calc: improved':
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+ let currency2 = prompt('USD or EUR?').toLowerCase();
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+ let rate2;
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+ switch (currency2) {
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+ case 'usd':
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+ rate2 = 34.67
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+ break;
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+ case 'eur':
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+ rate2 = 37.38
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+ break;
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+ default:
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+ rate2 = 0;
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+ }
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+ let uah1 = +prompt('enter UAH to convert');
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+ alert(`${(uah1 / rate2).toFixed(2)} ${currency2}`)
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+ break;
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+
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+ case 'currency calc: two rates':
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+ let currency3 = prompt('Do you want to use USD or EUR?').toLowerCase()
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+ let rate3;
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+ let buyRate1 = confirm('Do you want to buy currency?')
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+ switch (currency3) {
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+ case 'usd':
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+ buyRate1 ? rate3 = 36.28 : rate3 = 34.67
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+ break;
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+ case 'eur':
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+ buyRate1 ? rate3 = 41.77 : rate3 = 37.38
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+ break;
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+ default:
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+ alert('error');
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+ }
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+ let uah2 = +prompt('enter UAH to convert');
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+ alert(`${(uah2 / rate3).toFixed(2)} ${currency3}`)
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+ break;
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+
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+ case 'currency calc: if':
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+ let currency4 = prompt('Do you want to use USD or EUR?').toLowerCase()
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+ if(currency4 === 'usd' || currency4 === 'eur') {
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+ let uah4 = +prompt('enter UAH to convert');
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+ let rate4;
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+ let buyRate2 = confirm('Do you want to buy currency?')
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+ if (currency4 === 'usd') {
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+ buyRate2 ? rate4 = 36.28 : rate4 = 34.67
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+ } else if (currency4 === 'eur') {
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+ buyRate2 ? rate4 = 41.77 : rate4 = 37.38
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+ } else {
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+ alert('error')
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+ }
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+ alert(`${(uah4 / rate4).toFixed(2)} ${currency4}`)
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+ }
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+ break;
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+
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+ case 'scissors':
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+
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+ let usersTurn = prompt('Rock, paper or scissors?').toLowerCase();
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+ let turns = ['rock', 'paper', 'scissors'];
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+ const randomIndex = Math.floor(Math.random() * 3)
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+ let computersTurn = turns[randomIndex]
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+ console.log(computersTurn)
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+
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+ if(usersTurn === computersTurn) {
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+ alert('It\'s a tie!')
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+ } else if(usersTurn === 'paper' && computersTurn === 'scissors') {
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+ alert('computer won');
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+ } else if(usersTurn === 'scissors' && computersTurn === 'rock') {
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+ alert('computer won');
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+ } else if(usersTurn === 'rock' && computersTurn === 'paper') {
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+ alert('computer won')
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+ } else if(computersTurn === 'paper' && usersTurn === 'scissors') {
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+ alert('you won');
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+ } else if(computersTurn === 'scissors' && usersTurn === 'rock') {
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+ alert('you won');
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+ } else if(computersTurn === 'rock' && usersTurn === 'paper') {
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+ alert('you won')
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+ } else {
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+ alert('error')
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+ }
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+ break;
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+
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+ case 'задание на синий пояс':
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+ let ratios = {
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+ usdToBuy: 36.28,
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+ eurToBuy: 41.77,
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+ usdToSell: 34.67,
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+ eurToSell: 37.38
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+ }
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+ let currency5 = prompt('Do you want to use USD or EUR?').toLowerCase()
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+ if(currency5 === 'usd' || currency5 === 'eur') {
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+ let rate;
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+ let uah = +prompt('enter UAH to convert');
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+ let buyRate = confirm('Do you want to buy currency?')
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+ if (currency5 === 'usd') {
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+ rate = buyRate ? ratios["usdToBuy"] : ratios["usdToSell"]
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+ } else if (currency5 === 'eur') {
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+ rate = buyRate ? ratios["eurToBuy"] : ratios["eurToSell"]
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+ } else {
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+ alert('error')
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+ }
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+ alert(`${(uah / rate).toFixed(2)} ${currency5}`)
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+ }
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+ break;
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+
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+ case 'real data':
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+ let currency = prompt('Do you want to get USD or EUR?').toUpperCase()
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+ if(currency === 'USD' || currency === 'EUR') {
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+ let uah = +prompt('enter UAH to convert');
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+ fetch('https://open.er-api.com/v6/latest/' + currency)
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+ .then(res => res.json())
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+ .then(data => {
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+ alert(`${(uah / data.rates.UAH).toFixed(2)} ${currency}`)
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+ })
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+ }
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+ break;
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+
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+ case 'задание на черный пояс':
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+ let usersTurn1 = prompt('Rock, paper or scissors?').toLowerCase();
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+ let turns1 = ['rock', 'paper', 'scissors'];
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+ const randomIndex1 = Math.floor(Math.random() * 3)
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+ let computersTurn1 = turns1[randomIndex1]
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+ console.log(computersTurn1)
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+ let compWin = usersTurn1 === 'paper' && computersTurn1 === 'scissors' || usersTurn1 === 'scissors' && computersTurn1 === 'rock' || usersTurn1 === 'rock' && computersTurn1 === 'paper';
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+ let userWin = computersTurn1 === 'paper' && usersTurn1 === 'scissors' || computersTurn1 === 'scissors' && usersTurn1 === 'rock' || computersTurn1 === 'rock' && usersTurn1 === 'paper';
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+ let tie = usersTurn1 === computersTurn1 && alert('It\'s a tie!')
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+ let victory = compWin && alert('computer won') || userWin && alert('you won');
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+ break;
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+}
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+
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