创建异步加载树

使用教程 » 创建异步加载树

要创建异步树，每个树节点必须有一个“id”属性，该属性将被发布到back server以检索子节点数据.

创建树

<ul id="tt" class="easyui-tree" url="tree2_getdata.php"> </ul>

服务器代码

$id = isset($_POST['id']) ? intval($_POST['id']) : 0; include 'conn.php'; $result = array(); $rs = mysql_query("select * from nodes where parentId=$id"); while($row = mysql_fetch_array($rs)){ $node = array(); $node['id'] = $row['id']; $node['text'] = $row['name']; $node['state'] = has_child($row['id']) ? 'closed' : 'open'; array_push($result,$node); } echo json_encode($result); function has_child($id){ $rs = mysql_query("select count(*) from nodes where parentId=$id"); $row = mysql_fetch_array($rs); return $row[0] > 0 ? true : false; }

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