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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.
演示案例
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; }
下载 EasyUI 实例:
easyui-tree-demo.zip
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SQL
调试
请求信息 : 2026-03-29 22:03:03 HTTP/1.1 GET : https://www.jeasyui.cn/tutorial/tree/tree2.html
运行时间 : 0.030982s [ 吞吐率：32.28req/s ] 内存消耗：3,207.93kb 文件加载：135
查询信息 : 0 queries
缓存信息 : 0 reads,0 writes
会话信息 : SESSION_ID=925e87e97fd3ab69cd86cd4389d47c50
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