How to sum a filtered html table?

Question

I have a HTML Table that I am able to filter with jquery. At the bottom of my table, i want to have a "total" row, that sums all values displayed. The sum displaye

Answer 1

I think this code will work.

$(document).ready(function () {
    var table = $('#datatable').DataTable();
    calculatesum(table.rows().nodes());
    $('input').on('keyup click', function () {
        var searched = table.rows({
            search: 'applied'
        }).nodes();

        calculatesum(searched);

    });
});

function calculatesum(all) {
    var columnsToSum = [2, 4];
    for (i = 0; i < columnsToSum.length; i++) {
        a = columnsToSum[i];
        sum = 0;
        for (j = 0; j < all.length; j++) {

            var val = all[j].getElementsByTagName('td')[a].innerHTML;
            sum += isNaN(val) ? 0 : parseInt(val);


        }
        document.getElementById("data" + a).innerHTML = sum;
    }
}