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@@ -0,0 +1,235 @@
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+var a = 5;
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+var b, c;
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+
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+b = (a * 5);
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+b = (c = b/2);
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+
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+// Выражение 2 -это выражение литерального значения
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+// b - это выражение переменной
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+// b/2 - это арифметическое выражение
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+//c = b/2, b = (c = b/2) - это выражение присваивания
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+
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+// Расставим скобки
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+// b = (c = ((a*5)/2));
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+
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+// Порядок вычисления
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+// 1. объявляется переменная a и ей присваивается число 5
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+// 2. объявляется переменные b, c
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+// 3. вычисляется выражение а * 5 = 25 и присваивается b
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+// 4. вычисляется выражение b /2 = 12.5 и присваивается c
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+// 5. 12.5 присваивается b
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+
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+// console.log(a);
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+// console.log(b);
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+// console.log(c);
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+
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+
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+//Task 2
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+// console.log(1) alert(1) Uncaught SyntaxError: Unexpected identifier
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+
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+// console.log('ошибка')
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+// [1, 2].join('') VM260:2 Uncaught TypeError: Cannot read properties of undefined
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+
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+
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+
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+//Task Number: age
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+// function showYearBirth () {
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+// let age = +(prompt('Your age'));
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+// let yearPresent = 2021; console.log(age);
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+
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+// if ( age == 0 || isNaN(age)) {
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+// age = prompt('Please writing your age'); console.log(age);
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+// } else if ( age !== nul) {
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+// let yearBirth = yearPresent - age;
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+// alert(yearBirth);
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+// };
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+
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+// alert ('You are not interested');
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+// return;
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+// };
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+
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+// showYearBirth();
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+
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+
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+
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+// Task Number: temperature
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+// function showNumberTemperature () {
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+// let unit = confirm('We transfer the temperature to Faringate');
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+// const faringate = 32;
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+// let temperature;
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+
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+// if (unit) {
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+// temperature = prompt('how many degrees celsius')*faringate;
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+// alert(`Faringate degrees ${temperature}`);
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+// return;
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+// };
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+
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+// temperature = prompt('how many degrees Faringate')/32;
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+// alert(`Celsius degrees ${temperature}`);
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+// };
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+
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+// showNumberTemperature ();
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+
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+
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+
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+// Task Number: divide
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+// let numb1 = prompt('enter the first number');
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+// let numb2 = prompt('enter the second number');
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+
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+// let calculationInteger = (a, b) => {
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+// let integer = Math.floor(a/b);
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+// alert(integer);
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+// return;
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+// };
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+
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+// calculationInteger (numb1, numb2);
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+
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+
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+
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+// Task Number: odd
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+// let oddnumber = +prompt('Enter number');
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+
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+// function checkOddNumber () {
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+
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+// if (typeof(oddnumber) !== 'number' || isNaN(oddnumber)){
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+// alert('It is not a number');
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+// return;
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+// };
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+// alert('Good!');
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+
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+// if (oddnumber%2 == 0) {
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+// alert(`${oddnumber} it is an even number `);
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+// return;
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+// };
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+// alert('it is not an even number');
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+// };
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+
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+// checkOddNumber ();
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+
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+
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+
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+//Task String: greeting
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+// let yourname = prompt('What is your name?');
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+// alert(`Welcome ${yourname}`);
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+
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+
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+
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+//Task String: lexics
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+// const words = prompt('write a word').split(' '); console.log(words);
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+// const badwords = prompt('write bad words').split(' ');console.log(badwords);
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+
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+// for (let i = 0; i < badwords.length; i++) {
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+// if (words.includes(badwords[i])) {
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+// alert(`${badwords[i]} bad word`);
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+// }
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+// };
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+
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+// Task confirm
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+// const x = confirm('You are a woman');
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+// console.log(typeof(x));
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+// console.log(x);
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+
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+// if (x) {
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+// alert('woman');
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+// } else {
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+// alert('Man');
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+// };
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+
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+
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+//Task Array: booleans
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+// const arr = [];
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+
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+// for (let i=0; i<5; i++) {
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+// const meaning = confirm('enter number');
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+// arr[i] = meaning;
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+// };
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+
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+// console.log(arr);
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+
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+
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+// Task Array: plus
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+// const arr = [1, 5, 3];
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+// arr[2] = arr[0] + arr[1];
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+// console.log(arr);
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+
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+
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+//Task Array: plus string
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+// const arr = [1, 'bbb', 3];
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+// let sum = 0;
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+
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+// for (let i = 0; i < arr.length; i++) {
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+// sum += arr[i];
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+// };
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+
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+// console.log(sum);
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+
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+
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+// Task Object: real, Object: change
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+// const earrings = {
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+// metal: 'gold',
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+// weight: 5,
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+// proba: 999,
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+// color: 'yellow',
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+// stone: " ",
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+// };
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+
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+// console.log(earrings );
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+
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+// earrings.metal = 'silver';
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+// earrings['stone'] = 'Diamond';
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+// console.log(earrings);
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+
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+
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+
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+//Task Comparison if
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+// var age = +prompt("Сколько вам лет?","");
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+// if (age < 0) {
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+// alert("то ли киборг, то ли ошибка");
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+// } else if (age < 18){
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+// alert("школьник");
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+// }
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+// else if (age < 30){
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+// alert("молодеж");
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+// }
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+// else if (age < 45){
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+// alert("зрелость");
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+// }
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+// else if (age < 60){
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+// alert("закат");
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+// }
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+// else if (age > 60){
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+// alert("как пенсия?");
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+// };
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+
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+
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+//Task Comparison: sizes
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+// const size = {
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+// rus: [40, 42, 44, 46, 48, 50, 52, 54],
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+// italy: [38, 40, 42, 44, 46, 48, 50, 52],
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+// usa: [6, 8 ,10, 12, 14, 16, 18, 20],
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+// };
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+// const country = prompt('select country (Italy USA)').toLowerCase();
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+
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+// if (country === 'italy') {
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+// alert(size.italy);
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+// } else
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+// alert(size.usa);
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+
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+
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+// Task Ternary
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+//const gender = confirm('Can i find your gender') ? (alert('you are a woman?') ? "" : alert('you are a man?') ):alert('goodbye');
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+
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+
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+
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+// Task Синий пояс Number: flats
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+
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+function defineNumberFlat (floor, countFlatOnFloor, numberFlat) {
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+ const countFlatInEntranse = floor * countFlatOnFloor;
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+ const entranse = Math.ceil(numberFlat / countFlatInEntranse);
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+ console.log (`Number entranse ${entranse}`);
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+
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+ const floorNumber = Math.ceil((numberFlat % countFlatInEntranse) / countFlatOnFloor);
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+ console.log (`Number floor ${floorNumber}`);
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+
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+};
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+defineNumberFlat (9, 4, 81);
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Vika