By default the null values are displayed at bottom of the Grid row while perform sorting in ascending order. As well as this values are displayed at top of the Grid row while perform sorting with descending order. But you can customize this default order to display the null values at always bottom row of the Grid by usingcolumn.sortComparer
method.
In the below demo we have displayed the null values at bottom of the Grid row while sorting the OrderDate column in both ways.
var grid = new ej.grids.Grid({
dataSource: Orderdata,
allowSorting: true,
actionBegin: actionBegin,
columns: [
{ field: 'OrderID', headerText: 'Order ID', width: 100 },
{ field: 'CustomerID', headerText: 'Customer ID', width: 120 },
{ field: 'OrderDate', headerText: 'Order Date', format: 'yMd', sortComparer: sortComparer, width: 120},
{ field: 'ShipCountry', headerText: 'Ship Country', width: 150 }
],
height: 280
});
grid.appendTo('#Grid');
var action;
function actionBegin(args) {
if (args.requestType == "sorting") {
action = args.direction;
}
}
function sortComparer(reference, comparer) {
var sortAsc = action === "Ascending" ? true : false;
if (sortAsc && reference === null) {
return 1;
}
else if (sortAsc && comparer === null) {
return -1;
}
else if (!sortAsc && reference === null) {
return -1;
}
else if (!sortAsc && comparer === null) {
return 1;
} else {
return reference - comparer;
}
}
<!DOCTYPE html><html lang="en"><head>
<title>EJ2 Grid</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="Typescript Grid Control">
<meta name="author" content="Syncfusion">
<link href="index.css" rel="stylesheet">
<link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet">
<link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-grids/styles/material.css" rel="stylesheet">
<link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-buttons/styles/material.css" rel="stylesheet">
<link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-popups/styles/material.css" rel="stylesheet">
<link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-navigations/styles/material.css" rel="stylesheet">
<link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-dropdowns/styles/material.css" rel="stylesheet">
<link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-lists/styles/material.css" rel="stylesheet">
<link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-inputs/styles/material.css" rel="stylesheet">
<link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-calendars/styles/material.css" rel="stylesheet">
<link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-splitbuttons/styles/material.css" rel="stylesheet">
<script src="https://cdn.syncfusion.com/ej2/21.2.3/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
<div id="container">
<div id="dropDown"></div>
<div id="Grid"></div>
</div>
<script>
var ele = document.getElementById('container');
if(ele) {
ele.style.visibility = "visible";
}
</script>
<script src="index.js" type="text/javascript"></script>
</body></html>