function generateReport() {

    let checkboxElements = document.querySelectorAll('input[type=checkbox]');

    checkboxElements = Array.from(checkboxElements);

    let checkedIndexes = checkboxElements.map(el => el.checked === true ? checkboxElements.indexOf(el) : null);

    checkedIndexes = checkedIndexes.filter(el => el !== null);

    console.log(checkedIndexes);

    let trElements = document.querySelectorAll('tr');

    trElements = Array.from(trElements);

    let arrOfKeys = [];

    let arrOfObjects = [];


    for (let i = 0; i < trElements.length; i++) {

        if (i > 0) {

            let obj = {};

            let curArr = trElements[i].querySelectorAll('td');

            curArr = Array.from(curArr);

            // console.log(curArr);

            trElements[i] = curArr.filter((el, ind) => checkedIndexes.includes(ind) ? el : false);

            for (let j = 0; j < trElements[i].length; j++) {

                obj[arrOfKeys[j].textContent.trim().toLowerCase()] = trElements[i][j].textContent;

            }

            arrOfObjects.push(obj);

        } else {

            let curArr = trElements[i].querySelectorAll('th');

            curArr = Array.from(curArr);

            arrOfKeys = curArr.filter((el, ind) => checkedIndexes.includes(ind) ? el : false);

        }

    }


    arrOfObjects = JSON.stringify(arrOfObjects);

    console.log(arrOfObjects);

    let outputElement = document.getElementById('output');

    outputElement.textContent = arrOfObjects;


}