08. Generate report

function solve() {
    const checkBoxes = document.querySelectorAll('thead th input[type="checkbox"]');
    const rows = document.querySelectorAll('tbody tr');
    const headings = document.querySelectorAll('thead th');

    let checkedIndexes = [];

    for (let i = 0; i < checkBoxes.length; i++) {
        if (checkBoxes[i].checked) {
            checkedIndexes.push(i);
        }
    }

    let result = [];

    for (let row of rows) {
        const cells = row.querySelectorAll('td');
        let rowObject = {};

        for (let j = 0; j < checkedIndexes.length; j++) {
            const index = checkedIndexes[j];
            const headingCell = headings[index];
            const headingName = headingCell.childNodes[0].textContent.trim();
            rowObject[headingName] = cells[index].textContent.trim();
        }
        result.push((rowObject));
    }

    document.getElementById('output').value = JSON.stringify(result);
}