HW/HW004/myjs.js

/* html tree */

let body = {
    tagName: 'body',
    subTags: [
        {
            tagName: 'div',
            subTags: [
                {
                    tagName: 'span',
                    text: 'Enter a data please',
                },
                {
                    tagName: 'br',
                },
                {
                    tagName: 'input',
                    attrs: {
                        type: 'text',
                        id: 'name'
                    },
                },
                {
                    tagName: 'input',
                    attrs: {
                        type: 'text',
                        id: 'surname'
                    }
                }
            ]
        },
        {
            tagName: 'div',
            subTags: [
                {
                    tagName: 'button',
                    attrs: {
                        id: 'ok'
                    },
                    text: 'OK'
                },
                {
                    tagName: 'button',
                    attrs: {
                        id: 'cancel'
                    },
                    text: 'Cancel'
                },
            ]
        }
    ]
}

body.subTags[1].subTags[1].text
body.subTags[0].subTags[1].attrs.id

/* declarative fields */

var notebook = {
    brand: prompt("Enter a brand"),
    type: prompt("Enter a type"),
    model: prompt("Enter a model"),
    ram: +prompt("Enter a ram"),
    size: prompt("Enter a size"),
    weight: +prompt("Enter a weight"),
    resolution: {
        width: +prompt("Enter a width"),
        height: +prompt("Enter a height"),
    },
    owner: 'Anton'
};

var phone = {
    brand: prompt("Enter a brand"),
    model: prompt("Enter a model"),
    ram: +prompt("Enter a ram"),
    color: prompt("Enter a color"),
    owner: 'Anton'
};


var person = {
    name: prompt("Enter a name"),
    surname: prompt("Enter a surname"),
    married: confirm("Are you a married?"),
    smartphone: 'iPhone',
    laptop: 'Lenovo'
}

/* object links */

person.smartphone = phone
person.laptop = notebook
notebook.owner = person
phone.owner = person

/* imperative array fill 3 */

let arr = []
arr[0] = prompt('Напишите слово')
arr[1] = prompt('Напишите слово')
arr[2] = prompt('Напишите слово')
alert(arr)

/* while confirm */

let round;
while (round != true) {
    round = confirm('Вы человек?');
    if (round) {
        break;
    }
}

/* array fill */

let arr1 = [];
let value;

do {
    value = prompt("Введите что-то")
    if (value) {
        arr1.push(value);
    } else {
        break;
    }

} while (value)

/* array fill nopush */

let arr4 = [];
let value1;

for (let i = 0; i != null; i++) {
    value1 = prompt('Напишите слово')

    if (value1) {
        arr4[i] = value1
    }
    else {
        break
    }
}

/* infinite probability */

let random = Math.random();
let result = 0;
while (random) {
    random = Math.random();
    result += 1;
    if (random > 0.9) {
        alert("Компьютер выполнил " + result + " циклов.");
        break
    }
}

/* empty loop */

do {

} while (prompt('Напишите слово') == null || false)

/* progression sum */

var sum = 0;
for (var i = 1; i <= 27; i = i + 3) {
    console.log(i);
    sum = sum + i;
}
console.log(sum)

/* chess one line */

let chessStr = ' ';
for (let i = 0; i < 10; i++) {

    if (i % 2 === 0) {
        chessStr += " ";
    } else {
        chessStr += "#";
    }

}
console.log(chessStr)

/* numbers */

let numbers;
for (let i = 0; i <= 10; i++) {
    for (let a = 0; a < 10; a++) {
        numbers = numbers + a;
        if (a == 9) {
            numbers = numbers + '\n'
        }
    }
    if (i == 10) {
        console.log(numbers);
        break;
    }
}

/* chess */

let chess;
for (let i = 0; i < 10; i++) {
    if (i > 0) chess += "\n";
    for (let j = 0; j < 12; j++) {
        if ((j + i) % 2 === 0) {
            chess += ".";
        } else {
            chess += "#";
        }
    }
}
console.log(chess)

/* cubes */

let index = [];
for (let i = 0; i <= 10; i++) {
    index.push(i * i * i);
}

console.log(index)

/* multiply table */

let arr3 = []
for (let i = 0; i <= 10; i++) {
    let arr4 = []
    arr3.push(arr4)
    for (let a = 0; a <= 10; a++) {
        arr4.push(i * a)
    }
}
console.log(arr3)

/* Задание на синий пояс: треугольник */

let delta = '';
for (let i = 0; i < 1; i++) {
    for (let j = 0; j <= 11; j++) {
        if (j == 11) {
            delta = delta + '\n'
        }
        else if (j === 5) {
            delta = delta + '#'
        }
        else {
            delta = delta + '.'
        }
    }
    for (let j = 0; j <= 11; j++) {
        if (j == 11) {
            delta = delta + '\n'
        }
        else if (j === 4 || j === 5 || j === 6) {
            delta = delta + '#'
        }
        else {
            delta = delta + '.'
        }
    }
    for (let j = 0; j <= 11; j++) {
        if (j == 11) {
            delta = delta + '\n'
        }
        else if (j === 3 || j === 4 || j === 5 || j === 6 || j === 7) {
            delta = delta + '#'
        }
        else {
            delta = delta + '.'
        }
    }
    for (let j = 0; j <= 11; j++) {
        if (j == 11) {
            delta = delta + '\n'
        }
        else if (j === 2 || j === 3 || j === 4 || j === 5 || j === 6 || j === 7 || j === 8) {
            delta = delta + '#'
        }
        else {
            delta = delta + '.'
        }
    }
    for (let j = 0; j <= 11; j++) {
        if (j == 11) {
            delta = delta + '\n'
        }
        else if (j === 1 || j === 2 || j === 3 || j === 4 || j === 5 || j === 6 || j === 7 || j === 8 || j === 9) {
            delta = delta + '#'
        }
        else {
            delta = delta + '.'
        }
    }
    for (let j = 0; j <= 11; j++) {
        if (j == 11) {
            delta = delta + '\n'
        }
        else if (j === 0 || j === 1 || j === 2 || j === 3 || j === 4 || j === 5 || j === 6 || j === 7 || j === 8 || j === 9 || j === 10) {
            delta = delta + '#'
        }
        else {
            delta = delta + '.'
        }
    }
}

console.log(delta)