jEasyUI tree grid dynamic loading

Dynamic loading of tree grid helps to load partial row data from the server and avoid long wait for loading large data. This tutorial will show you how to create a TreeGrid with dynamic loading features.

Create a tree grid (TreeGrid)

	<table title="Products" class="easyui-treegrid" style="width:700px;height:300px"
			url="treegrid3_getdata.php"
			rownumbers="true"
			idField="id" treeField="name">
		<thead>
			<tr>
				<th field="name" width="250">Name</th>
				<th field="quantity" width="100" align="right">Quantity</th>
				<th field="price" width="150" align="right" formatter="formatDollar">Price</th>
				<th field="total" width="150" align="right" formatter="formatDollar">Total</th>
			</tr>
		</thead>
	</table>

Server-side code

treegrid3_getdata.php

$id = isset($_POST['id']) ? intval($_POST['id']) : 0;

include 'conn.php';
$result = array();
$rs = mysql_query("select * from products where parentId=$id");
while($row = mysql_fetch_array($rs)){
	$row['state'] = has_child($row['id']) ? 'closed' : 'open';
	$row['total'] = $row['price']*$row['quantity'];
	array_push($result, $row);
}

echo json_encode($result);

function has_child($id){
	$rs = mysql_query("select count(*) from products where parentId=$id");
	$row = mysql_fetch_array($rs);
	return $row[0] > 0 ? true : false;
}

Download jQuery EasyUI instance

jeasyui-tree-treegrid3.zip