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

console.log(body.children[1].children[1].innerText)
console.log(body.children[0].children[3].id)


var person;
var notebook = {
    brand: prompt('Brand:'),
    type:  prompt('Type:'),
    model: prompt('Model:'),
    ram: +prompt('Ram:'),
    size: +prompt('Size:'),
    weight: +prompt('Weight:'),
    resolution: {
        width: +prompt('Resolution width:'),
        height: +prompt('Resolution height:'),
    },
    owner: person
};

var phone = {
    brand: prompt('Brand:'),
    model: prompt('Model:'),
    ram: +prompt('Ram:'),
    color: prompt('Color:'),
    owner: person
};

person = {
    name: prompt('Name:'),
    surname: prompt('Surname:'),
    married: confirm('Married?'),
    smartphone: phone,
    laptop: notebook
};

let array1 = []
array1[0] = prompt('string 1');
array1[1] = prompt('string 2');
array1[2] = prompt('string 3');

let confirm1;
while(!confirm1) {
    confirm1 = confirm('Are you hungry?');
    if(confirm1) {
        break;
    }
}

let prompt1;
let array2 = []
while(prompt1 !== null) {
    prompt1 = prompt('Enter something');
    array2.push(prompt1)
    if(!prompt1) {
        break
    }
    console.log(array2)
}


let prompt2 = prompt('Enter something');
let array3 = []
do {
    let i = 0;
    prompt2 ? array3[i++] = prompt2 : null
    console.log(array3)
} while(prompt2 !== null)

let i = 0;
let n;
while(n !== 5) {
    i++
    let n = Math.random() * 5;
    console.log(n)
    console.log(i)
    if(n === 5) {
        break
    }
}
let end = +prompt('Введите крайнее число прогрессии')
let sum = 0;
for(let i = 1; i < 30; i+=3){
    console.log(i)
    sum += i
}
alert(`Сумма чисел в прогрессии - ${sum}`);

let chessString = '';

for(let i = 0; i < 10; i++) {
    i % 2 === 0 ? chessString += ' ' : chessString += '#'
}
console.log(chessString);

let numbers2 = '';

for(let i = 0; i < 10; i++) {
    numbers2 += '\n'
    for(let j = 0; j < 10; j++) {
        numbers2 += j
    }
}
console.log(numbers2)

let height = 8;
let width = 10;
let board = "";

for (let i = 0; i < height; i++) {
    if(i > 0) board += "\n";
    for (let j = 0; j < width; j++) {
        if ((j + i) % 2 === 0){
            board += ".";
        } else {
            board += "#";
        }
    }
}

console.log(board);

let numbers = [];
for(let i = 0; i < 15; i++) {
    numbers.push(Math.pow(i, 3));
}

console.log(numbers)

let multiplyTable = [];
for(let i = 0; i <= 9; i++) {
    let nestedArr = []
    multiplyTable.push(nestedArr)
    for(let j = 0; j <= 9; j++) {
        nestedArr.push([j * i])
    }
}
console.log(multiplyTable[5][6])


let table = document.createElement('table')
for(let i = 1; i <= 9; i++) {
    let tr = document.createElement('tr');
    for(let j = 1; j <= 9; j++) {
        let td = document.createElement('td')
        td.innerHTML = String(j * i)
        tr.appendChild(td)
    }
    table.appendChild(tr)
}

document.body.appendChild(table)