I am trying to add event onclick to a span added by DTColumnBuilder.

                DTColumnBuilder
                    .newColumn('Invoice')
                    .withTitle('<span class="li-table-header">Invoice</span>')
                    .withOption('visible', true)
                    .renderWith(function (data, type, full) {
                        return `<span style="color: #337AB7;cursor:pointer">Download</span>`;
                    }),

when I try too add onclick (<span onclick="test()" .../span>) I am getting an error saying that test() is not defined even though I have defined test.