igGrid filtering operands texts dynamic columns databound

by georgianastasov

HTML

<script src="https://igniteui.com/js/modernizr.min.js"></script>
<script src="https://code.jquery.com/jquery-1.9.1.min.js"></script>
<script src="https://code.jquery.com/ui/1.10.3/jquery-ui.min.js"></script>
<script src="https://cdn-na.infragistics.com/igniteui/latest/js/infragistics.core.js"></script>
<script src="https://cdn-na.infragistics.com/igniteui/latest/js/infragistics.lob.js"></script>
<script src="https://igniteui.com/js-data/employee-data-allDatatypes"></script>
<link href="https://cdn-na.infragistics.com/igniteui/latest/css/themes/infragistics/infragistics.theme.css" rel="stylesheet"></link>
<link href="https://cdn-na.infragistics.com/igniteui/latest/css/structure/infragistics.css" rel="stylesheet"></link>

<table id="gridSimpleFiltering"></table>

JavaScript

$(function () {
			var data = [
            { "FirstName": "John", "LastName": "Doe", "RegistererDate": "2022-04-09", "Country": "USA", "Age": 30, "IsActive": true, "RegistererTime": "08:30:00" },
            { "FirstName": "Jane", "LastName": "Smith", "RegistererDate": "2022-04-10", "Country": "Canada", "Age": 25, "IsActive": false, "RegistererTime": "09:45:00" },
            { "FirstName": "Michael", "LastName": "Johnson", "RegistererDate": "2022-04-11", "Country": "USA", "Age": 35, "IsActive": true, "RegistererTime": "11:15:00" },
            { "FirstName": "Emily", "LastName": "Brown", "RegistererDate": "2022-04-12", "Country": "UK", "Age": 28, "IsActive": false, "RegistererTime": "13:20:00" },
            { "FirstName": "David", "LastName": "Wilson", "RegistererDate": "2022-04-13", "Country": "Australia", "Age": 40, "IsActive": true, "RegistererTime": "15:30:00" }
        ];
        
			$("#gridSimpleFiltering").igGrid({
				autoGenerateColumns: false,
                height: "400px",
                width: "100%",
				columns: [
                    { headerText: "First Name", key: "FirstName", dataType: "string"},
                    { headerText: "Last Name", key: "LastName", dataType: "string" },
                    { headerText: "Register Date", key: "RegistererDate", dataType: "date" },
                    { headerText: "Country", key: "Country", dataType: "string" },
                    { headerText: "Age", key: "Age", dataType: "number" },
                    { headerText: "Is Active", key: "IsActive", dataType: "bool" },
				],
				dataSource: data,
				responseDataKey: "results",
				features: [{
					name: "Filtering",
					type: "local",
					mode: "simple",
          columnSettings: [
          ],
				}]
			});
      
      $(".ui-iggrid-filtereditor").each(function() {
    		if ($(this).attr("placeholder") === "Contains...") {
        	$(this).attr("placeholder", "Keyword...");
    		} else if ($(this).attr("placeholder") === "Equals...") {
   ...