Filtro/Campo de Pesquisa para tabelas - JS

scripts.js

function tableFilter(input, tableSelector, index){
    // Declare variables
    var filter, table, tr, td, i;
    filter = input.value.toUpperCase();
    table = document.querySelector(tableSelector);
    tr = table.getElementsByTagName("tr");

    // Loop through all table rows, and hide those who don't match the search query
    for (i = 0; i < tr.length; i++) {
        td = tr[i].getElementsByTagName("td")[index];
        if (td) {
            if (td.innerHTML.toUpperCase().indexOf(filter) > -1) {
                tr[i].style.display = "";
            } else {
                tr[i].style.display = "none";
            }
        }
    }
}