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:`bottom`,
                            attrs:{id:'ok'}, text:`OK`
                        },
                        {
                            tagName:`bottom`,
                            attrs:{id:'cancel'}, text:`Cancel`
                        }
                    ]
                } 
            ] 
            }
body.subTags[1].subTags[1].text
body.subTags[0].subTags[3].attrs.id
                  
   //declarative fields
   
   let notebook = {
        brand: prompt (`Enter a brand`),
        type:  prompt('Enter a type'),
        model: prompt('Enter a model'),
        ram: +prompt('Enter a ram'),
        size: prompt('Size'),
        weight: +prompt('Weight'),
    resolution: {
        width: +prompt ('Width'),
        height: +prompt ('Height'),
    },
   };
   let phone = {
         brand: prompt('Enter a brand'),
         model: prompt('Enter a model'),
         ram: +prompt('Enter a ram'),
         color: prompt('Enter a color'),
};
let person = {
         name: prompt('Enter a name'),
         surname: prompt('Enter a surname'),
         married: confirm(),
};

    //imperative array fill 

    let element1 = +prompt(`Введите первый елемент`);
    let element2 = +prompt(`Введите второй елемент`);
    let element3 = +prompt(`Введите третий елемент`);

    let element = [];
    element.push (element1,element2,element3);
    alert(element);

    //while confirm

       let cake01 = ``;
       while(cake01!=true) {
         cake01 = confirm(`Будешь кекс`)
       }

       //array fill
       let arr0 = [];
       let add = ``;
       while(add != null)
       {
        add = prompt(`введите даные`),
        arr0.push(add);
       }

    //array fill nopush

       let arr01 = [];
       let j = 0;
       let add1 = ``;
       while(add1 != null)
       {
        add1 = prompt(`введите данные`),
        arr01[j] = add1; ++j
    }
   //empty loop
      let block = ``;
      while(block!= prompt());

    //progression sum

    let z = 0;
    for(i = 1; i < 50; i+=3){
    z = z + i}
    
    //chess one lin

    let h = '';
    for(i = 0; i < 15; i++){
    if(i % 2 === 1){
    h = h + ' '} 
    else {
    h = h + '#'}}

    //numbers

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

//chess
let str2 = ''
for(n = 0;n<5;n++){
str2 += '\n'
for(y = 0;y < 12;y++){
    if(y % 2 === 1){
str2 += '#'} 
    else {
str2 += '.'}}
str2 += '\n'
for(y = 0;y < 12;y++){
    if(y % 2 === 1){
str2 += '.'} 
    else {
str2 += '#'}}}
console.log(str2)

//cubes
let arr = [];

for (let i = 0; i <= 10; i++) {
	arr.push((i**3));
}

console.log(arr);

//multiply table
let table = [];

for (let i = 1; i <= 10; i++) {
	table[i] = [];

	for (let j = 1; j <= 10; j++) {
		table[i][j] = j * i;
	}
}

console.log(table[5][6]); 
console.log(table[7][2]);