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+// switch:sizes------------------------------------------------------------------------------------;
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+// let sizeOfDressUA = +prompt(
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+// "Lets choose the right size for you. Enter your Ukrainian clothing size",
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+// []
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+// );
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+// switch (sizeOfDressUA) {
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+// case 38:
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+// alert("Your international size is XXS");
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+// break;
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+// case 40:
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+// alert("Your international size is XS");
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+// break;
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+// case 42:
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+// alert("Your international size is S");
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+// break;
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+// case 44:
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+// alert("Your international size is M");
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+// break;
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+// case 46:
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+// alert("Your international size is L");
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+// break;
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+// case 48:
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+// alert("Your international size is XL");
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+// break;
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+// case 50:
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+// alert("Your international size is XXL");
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+// break;
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+// case 52:
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+// alert("Your international size is 3XL");
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+// break;
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+// default:
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+// alert("We do not know size of your dress");
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+// }
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+
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+// switch:if-------------------------------------------------------------------------------------------;
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+
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+// let color = prompt("Enter color", "");
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+// if (color === "red") {
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+// document.write("<div style='background-color: red;'>Red</div>");
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+// } else if (color === "black") {
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+// document.write(
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+// "<div style='background-color: black; color: white;'>Black</div>"
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+// );
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+// } else if (color === "blue") {
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+// document.write("<div style='background-color: blue;'>Blue</div>");
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+// } else if (color === "green") {
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+// document.write("<div style='background-color: green;'>Green</div>");
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+// } else {
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+// document.write(
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+// "<div style='background-color: gray;'>I don`t understand</div>"
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+// );
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+// }
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+
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+// prompt: or--------------------------------------------------------------------------------------------;
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+// let yearOfBirth =
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+// +prompt("Please, type year of your birth", []) ||
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+// alert("You did not enter the date of Birth");
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+
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+// let currentYear = 2022;
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+// let age = currentYear - yearOfBirth;
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+
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+// alert(age);
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+// confirm: or this days----------------------------------------------------------------------------------;
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+
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+// confirm("Shopping?") || alert("You are crazy");
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+
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+// confirm: if this days-----------------------------------------------------------------------------------;
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+
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+// let answer = confirm("Shopping?");
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+
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+// if (answer === false) {
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+// alert("You are crazy");
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+// } else {
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+// alert("Yoohooo");
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+// }
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+
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+// triple prompt-------------------------------------------------------------------------------------------;
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+
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+// let name = prompt("Enter your name", []);
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+// let surname = prompt("Enter your surname", []);
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+// let patronymic = prompt("Enter your patronymic", []);
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+
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+// alert(`${surname}, ${name}, ${patronymic}`);
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+
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+// default: or-------------------------------------------------------------------------------------------;
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+
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+// let good_name = prompt("Enter your name", []) || "Ivan";
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+// let good_surname = prompt("Enter your surname", []) || "Ivanov";
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+// let good_patronymic = prompt("Enter your patronymic", []) || "Petrovych";
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+
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+// alert(`${good_surname}, ${good_name}, ${good_patronymic}`);
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+
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+// default: if-------------------------------------------------------------------------------------------;
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+
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+// let go_name = prompt("Enter your name", []);
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+// let go_surname = prompt("Enter your surname", []);
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+// let go_patronymic = prompt("Enter your patronymic", []);
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+
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+// if (go_name === null) {
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+// go_name = "Ivan";
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+// } else if (go_surname === null) {
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+// go_surname = "Ivanov";
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+// } else if (go_patronymic === null) {
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+// go_surname = "Petrovych";
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+// }
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+
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+// alert(`${go_surname}, ${go_name}, ${go_patronymic}`);
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+
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+// login and password-------------------------------------------------------------------------------------------;
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+
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+// let user_login = prompt("Enter your login");
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+// let user_password = prompt("Enter your password");
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+
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+// if (user_login != "admin" || user_password != "qwerty") {
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+// alert("Access denied");
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+// } else if (user_login === "admin" && user_password === "qwerty") {
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+// alert("Access success");
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+// }
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+
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+// currency calc-------------------------------------------------------------------------------------------;
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+
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+// let money = prompt("usd or eur?", []);
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+
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+// switch (money) {
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+// case "usd":
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+// let currensy_exchange = 0.027;
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+// let uah = prompt("Enter the amount in hryvnias");
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+// let amount = uah * currensy_exchange;
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+// alert(amount);
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+// break;
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+// case "eur":
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+// let ecurrensy_exchange = 0.025;
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+// let u_ah = prompt("Enter the amount in hryvnias");
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+// let amo_unt = u_ah * ecurrensy_exchange;
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+// alert(amo_unt);
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+// break;
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+// }
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+// currency calc: improved-------------------------------------------------------------------------------------------;
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+
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+// let money = prompt("usd or eur?", []);
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+// money = money.toLowerCase();
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+
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+// switch (money) {
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+// case "usd":
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+// let currensy_exchange = 38.4;
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+// let uah = prompt("Enter the amount in hryvnias");
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+// let amount = uah / currensy_exchange;
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+// alert(amount);
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+// break;
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+// case "eur":
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+// let ecurrensy_exchange = 39;
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+// let u_ah = prompt("Enter the amount in hryvnias");
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+// let amo_unt = u_ah / ecurrensy_exchange;
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+// alert(amo_unt);
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+// break;
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+// }
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+
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+// currency calc: two rates-------------------------------------------------------------------------------------------;
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+
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+// let money = prompt("usd or eur?", []);
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+// money = money.toLowerCase();
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+// let buyOrSale = confirm("You want buy currensy?", []);
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+
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+// switch (money) {
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+// case "usd":
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+// let currensy_exchange = buyOrSale === true ? 39.8 : 38.4;
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+// let uah = prompt("Enter the amount in hryvnias");
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+// let amount = uah / currensy_exchange;
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+// alert(amount);
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+// break;
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+// case "eur":
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+// let ecurrensy_exchange = buyOrSale === true ? 40.4 : 39;
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+// let u_ah = prompt("Enter the amount in hryvnias");
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+// let amo_unt = u_ah / ecurrensy_exchange;
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+// alert(amo_unt);
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+// break;
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+// }
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+// currency calc: if-------------------------------------------------------------------------------------------;
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+
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+// let money = prompt("usd or eur?", []);
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+// money = money.toLowerCase();
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+// let buyOrSale = confirm("You want buy currensy?", []);
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+
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+// if (money === "usd") {
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+// let currensy_exchange = buyOrSale === true ? 39.8 : 38.4;
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+// let uah = prompt("Enter the amount in hryvnias");
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+// let amount = uah / currensy_exchange;
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+// alert(amount);
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+// } else if (money === "eur") {
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+// let ecurrensy_exchange = buyOrSale === true ? 40.4 : 39;
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+// let u_ah = prompt("Enter the amount in hryvnias");
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+// let amo_unt = u_ah / ecurrensy_exchange;
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+// alert(amo_unt);
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+// } else {
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+// alert("Enter a valid currensy");
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+// }
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+
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+// scissors-------------------------------------------------------------------------------------------;
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+
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+// let select = prompt("paper , scissors, stone");
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+// let items = ["paper", "scissors", "stone"];
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+
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+// select = select.toLowerCase();
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+// alert(`You choose a ${select}`);
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+
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+// select = select.toLowerCase();
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+
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+// let selectComputer = items[Math.floor(Math.random() * items.length)];
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+
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+// alert(`Robot choose a ${selectComputer}`);
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+
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+// if (select === selectComputer) {
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+// alert("draw");
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+// } else if (select === "stone") {
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+// if (selectComputer === "scissors") {
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+// alert("You are win");
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+// } else {
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+// alert("You are lose");
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+// }
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+// } else if (select === "paper") {
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+// if (selectComputer === "stone") {
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+// alert("You are win");
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+// } else {
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+// alert("You are lose");
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+// }
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+// }
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+// if (select === "scissors") {
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+// if (selectComputer === "stone") {
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+// alert("You are lose");
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+// } else {
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+// alert("You are win");
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+// }
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+// } else "Renew game";
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+
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+// Задание на синий пояс-------------------------------------------------------------------------------------------;
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+
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+// let usd = {
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+// buyUsd: 38.4,
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+// saleUsd: 39.8,
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+// };
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+
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+// let eur = {
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+// buyEur: 39,
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+// saleEur: 40.4,
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+// };
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+
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+// let gbp = {
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+// buyGbp: 46,
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+// saleGbp: 48.5,
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+// };
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+
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+// let money = prompt("usd, eur or gbp?", []);
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+// money = money.toLowerCase();
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+// let buyOrSale = confirm("You want to buy currensy?", []);
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+
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+// if (money === "usd") {
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+// currency_exchange = buyOrSale === true ? usd.saleUsd : usd.buyUsd;
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+// } else if (money === "eur") {
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+// currency_exchange = buyOrSale === true ? eur.saleEur : eur.buyEur;
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+// } else if (money === "eur") {
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+// currency_exchange = buyOrSale === true ? gbp.saleGbp : gbp.buyGbp;
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+// } else {
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+// alert("We do noy know such a currency");
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+// }
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+
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+// let hryvnias = prompt("How much hryvnias do you want to exchange?");
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+
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+// let amount = hryvnias / currency_exchange;
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+
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+// alert(`You will get ${amount} ${money}`);
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+
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+// real data-------------------------------------------------------------------------------------------;
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+let user_choice = prompt("How many hryvnias you want exchange?", []);
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+
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+let rates = prompt("You want to buy usd, eur or gbp?", []);
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+
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+rates = rates.toUpperCase();
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+
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+getCurrencies();
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+
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+async function getCurrencies() {
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+ const response = await fetch("https://open.er-api.com/v6/latest/UAH");
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+ const data = await response.json();
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+
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+ if (rates === "USD") {
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+ amount = data.rates.USD * user_choice;
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+ alert(`You will get ${amount} ${rates}`);
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+ } else if (rates === "EUR") {
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+ amount = data.rates.EUR * user_choice;
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+ alert(`You will get ${amount} ${rates}`);
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+ } else if (rates === "GBP") {
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+ amount = data.rates.GBP * user_choice;
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+ alert(`You will get ${amount} ${rates}`);
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+ } else {
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+ alert("We don`t know such currency");
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+ }
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+}
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+
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+// Дополнительное задание-------------------------------------------------------------------------------------------;
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+
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+// Задание на черный пояс-------------------------------------------------------------------------------------------;
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OleksiiL