how to search through a table javascript

(function() {
  'use strict';

  var TableFilter = (function() {
    var Arr = Array.prototype;
    var input;

    function onInputEvent(e) {
      input = e.target;
      var table1 = document.getElementsByClassName(input.getAttribute('data-table'));
      Arr.forEach.call(table1, function(table) {
        Arr.forEach.call(table.tBodies, function(tbody) {
          Arr.forEach.call(tbody.rows, filter);
        });
      });
    }

    function filter(row) {
      var text = row.textContent.toLowerCase();
      var val = input.value.toLowerCase();
      row.style.display = text.indexOf(val) === -1 ? 'none' : 'table-row';
    }

    return {
      init: function() {
        var inputs = document.getElementsByClassName('table-filter');
        Arr.forEach.call(inputs, function(input) {
          input.oninput = onInputEvent;
        });
      }
    };

  })();

 TableFilter.init();
})();