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+//html tree
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+let loginForm = {
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+ tagName: "body",
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+ subTags: [
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+ {
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+ tagName: "div",
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+ subTags: [
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+ {
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+ tagName: "span",
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+ text: "Enter a data please:"
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+ },
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+ {
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+ tagName: "input",
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+ attrs: {
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+ type: "text",
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+ id: "name"
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+ }
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+ },
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+ {
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+ tagName: "input",
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+ attrs: {
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+ type: "text",
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+ id: "surname"
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+ }
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+ }
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+ ]
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+ },
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+ {
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+ tagName: "div",
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+ subTags: [
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+ {
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+ tagName: "button",
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+ attrs: {
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+ id: "ok"
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+ },
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+ text: "OK"
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+ },
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+ {
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+ tagName: "button",
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+ attrs: {
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+ id: "cancel"
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+ },
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+ text: "Cancel"
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+ }
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+ ]
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+ }
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+ ]
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+}
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+
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+console.log(loginForm.subTags[1].subTags[1].text);
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+console.log(loginForm.subTags[0].subTags[2].attrs.id);
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+
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+
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+//declarative fields
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+var notebook = {
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+ brand: prompt("Бренд ноутбука"),
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+ type: prompt("Тип ноутбука"),
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+ model: prompt("Модель ноутбука"),
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+ ram: +prompt("Ядра ноутбука"),
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+ size: prompt("Размер"),
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+ weight: +prompt("Вес"),
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+ resolution: {
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+ width: +prompt("Ширина экрана"),
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+ height: +prompt("Высота экрана"),
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+ },
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+};
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+
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+var phone = {
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+ brand: prompt("Бренд телефона"),
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+ model: prompt("Модель телефона"),
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+ ram: +prompt("Ядер"),
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+ color: prompt("Цвет телефона"),
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+};
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+
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+var person = {
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+ name: prompt("Имя"),
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+ surname: prompt("Фамилия"),
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+ married: confirm("Есть жена\муж ?"),
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+}
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+
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+
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+//object links
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+var notebook1 = {
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+ brand: "HP",
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+ type: "440 G4",
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+ model: "Y7Z75EA",
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+ ram: 4,
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+ size: "14",
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+ weight: 1.8,
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+ resolution: {
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+ width: 1920,
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+ height: 1080,
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+ },
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+};
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+
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+var phone1 = {
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+ brand: "meizu",
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+ model: "m2",
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+ ram: 2,
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+ color: "black",
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+};
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+
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+var person1 = {
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+ name: "Donald",
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+ surname: "Trump",
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+ married: true,
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+}
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+
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+person1.smartphone = phone1;
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+person1.laptop = notebook1;
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+notebook1.owner = person1;
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+phone1.owner = person1;
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+
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+console.log(person1.smartphone.owner.laptop.owner.smartphone == person1.smartphone);
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+
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+
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+//imperative array fill 3
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+let newArr = [];
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+
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+for(let i = 0; i < 3; i++) {
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+ newArr.push(prompt(`Введите элемент номер ${i + 1}`));
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+}
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+
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+console.log(newArr);
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+
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+
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+//while confirm
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+let check;
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+
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+do{
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+ check = confirm("Для продолжения нажмите 'Отмена'");
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+}while(!check);
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+
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+
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+//array fill
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+let check1;
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+let newArr1 = [];
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+
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+while(!check1) {
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+ newArr1.push("Какой-то элемент");
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+ check1 = confirm("Для добавления нового элемента в массив нажмите 'Отмена'");
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+}
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+
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+console.log(newArr1);
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+
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+
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+//array fill nopush
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+let check2;
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+let newArr2 = [];
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+let count = 0;
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+
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+while(!check2) {
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+ newArr2[count] = ("Какой-то элемент");
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+ check2 = confirm("Для добавления нового элемента в массив нажмите 'Отмена'");
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+ count++;
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+}
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+
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+console.log(newArr2);
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+
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+
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+//infinite probability
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+let count1 = 0;
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+
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+while(true){
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+ if(Math.random() > 0.9){
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+ break;
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+ }
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+ console.log(count1++);
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+}
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+
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+
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+//empty loop
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+let check3;
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+
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+while(!check3) check3 = prompt("Нажмите 'Отмена' что бы продолжить");
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+
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+
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+//chess one line
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+let str = " ";
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+
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+for(let i = 0; i < 5; i++) {
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+ str += "# ";
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+}
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+
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+console.log(str);
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+
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+
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+//numbers
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+let str1 = "";
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+
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+for(let i = 0; i < 10; i++) {
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+ str1 += "0123456789\n";
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+}
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+
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+console.log(str1);
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+
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+
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+//chess
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+let str2 = "";
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+
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+for(let i = 0; i < 10; i++) {
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+ if(i % 2) {
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+ str2 += "#";
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+ } else {
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+ str2 += ".";
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+ }
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+ for(let j = 0; j < 10; j++) {
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+ if((j + i) % 2) {
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+ str2 += ".";
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+ } else {
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+ str2 += "#";
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+ }
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+ }
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+ str2 += "\n";
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+}
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+
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+console.log(str2);
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+
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+
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+//cubes
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+let newArr3 = [];
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+
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+let n1 = 7;
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+
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+for(let i = 0; i < n1; i++) {
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+ newArr3[i] = Math.pow(i, 3);
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+}
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+
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+console.log(newArr3);
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+
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+
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+//multiply table
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+let multiplicationTableArr = [];
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+
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+for(let i = 0; i < 10; i++) {
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+ multiplicationTableArr[i] = [];
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+ for(let j = 0; j < 10; j++) {
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+ multiplicationTableArr[i][j] = i * j;
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+ }
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+}
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+
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+console.log(multiplicationTableArr);
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+
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+
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+//matrix to html table
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+let str3 = "";
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+
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+str3 += "<table>";
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+
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+for(let i = 0; i < multiplicationTableArr.length; i++) {
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+ str3 += "<tr>";
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+ for(let j = 0; j < multiplicationTableArr[i].length; j++) {
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+ str3 += `<td>${multiplicationTableArr[i][j]}</td>`;
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+ }
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+ str3 += "</tr>";
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+}
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+
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+str3 += "</table>";
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+
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+document.write(str3);
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+
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+
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+//Задание на синий пояс: Треугольник
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+let str4 = "";
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+
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+for(let i = 0; i < 6; i++) {
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+ for(let j = 0; j < 5 - i; j++) {
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+ str4 += ".";
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+ }
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+ for(let j = 0; j < i; j++) {
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+ if(j > 0) {
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+ str4 += "##";
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+ } else {
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+ str4 += "#";
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+ }
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+ }
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+ for(let j = 0; j < 5- i; j++) {
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+ str4 += ".";
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+ }
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+ str4 += "\n";
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+}
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+
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+console.log(str4);
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+
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+
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+//Задание на черный пояс: Электронная гадалка
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+let predictArray = [
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+ [1, 1],
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+ [1, 1]
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+]
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+
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+let history = [1, 1];
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+
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+let userChose = 1;
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+
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+while(userChose) {
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+ userChose = prompt("Введите 0 или 1");
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+
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+ alert(`Предсказываю ${predictArray[history[0]][history[1]]}`);
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+
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+ predictArray[history[0]][history[1]] = +userChose;
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+
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+ history.push(+userChose);
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+ history.shift();
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+}
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