How to filter jQuery Tablesorter by multiple columns using OR logic

Question

I am looking for a means of doing an OR filter against multiple columns in jQuery TableSorter much like DataTable Multiple column OR filter. I upgraded to 2.21.5.

I have a fiddle example. I have tried to do filter_functions:

    filter_functions: {
        '.filter-OR': function (e, n, f, i, $r, c) {
           /*
            manually check the row for all columns
            with a class of filter-OR
           */
        }
    }

but applying a function to any classes overrides the filter-availOnly option.

Not sure how to move forward with this.

Answer 1

If I am understanding the request, maybe try something like this (demo):

$(function () {
    var $table = $('table'),
        // get 'filter-OR' column indexes
        orColumns = $('.filter-OR').map(function (i) {
            return this.cellIndex;
        }).get(),
        filterfxn = function (e, n, f, i, $r, c) {
            var col, v,
                showRow = false,
                content = [];
            $r.children().filter(function (indx) {
                if (orColumns.indexOf(indx) > -1) {
                    v = (c.$filters.eq(indx).find('.tablesorter-filter').val() || '').toLowerCase();
                    showRow = showRow || $(this).text().toLowerCase() === v;
                }
            });
            return showRow;
        };

    $table.tablesorter({
        theme: 'green',
        widgets: ['uitheme', 'zebra', 'columns', 'filter'],
        sortReset: true,
        sortRestart: true,
        widthFixed: true,
        widgetOptions: {
            filter_functions: {
                '.filter-OR': {
                    'Yes': filterfxn,
                    'No' : filterfxn
                }
            }
        }
    });
});