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動態加載樹網格有助于從服務器上加載部分的行數據，避免加載大型數據的長時間等待。本教程將向您展示如何創建具有動態加載特性的樹網格。

創建樹網格

<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>

服務器代碼

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;
}

下載EasyUI示例：

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