Generate report

function generateReport() {
    let results = [];
    let checkedBoxes = {};
    const totalBoxes = Array.from(document.querySelectorAll('table thead tr th')).map(x => x.children[0]);

    for (let i = 0; i < totalBoxes.length; i++) {
        const box = totalBoxes[i];
        if (box.checked) {checkedBoxes[i] = box.name}
    }

    const rows = Array.from(document.querySelectorAll('table tbody tr')).map(x => Array.from(x.children));

    for (let row of rows) {
        let obj = {};
        for (let i = 0; i < row.length; i++) {if (Object.keys(checkedBoxes).map(Number).includes(i)) {obj[checkedBoxes[i]] = row[i].textContent;}}
        results.push(obj);
    }

    document.getElementById('output').textContent = JSON.stringify(results);
}