jEasyUI 樹形網(wǎng)格動態(tài)加載

動態(tài)加載樹形網(wǎng)格有助于從服務(wù)器上加載部分的行數(shù)據(jù)，避免加載大型數(shù)據(jù)的長時間等待。本教程將向您展示如何創(chuàng)建帶有動態(tài)加載特性的樹形網(wǎng)格（TreeGrid）。

創(chuàng)建樹形網(wǎng)格（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>

服務(wù)器端代碼

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;
}

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