jEasyUI 創(chuàng)建異步樹形菜單

為了創(chuàng)建異步的樹形菜單（Tree），每一個樹節(jié)點必須要有一個 'id' 屬性，這個將提交回服務器去檢索子節(jié)點數(shù)據(jù)。

創(chuàng)建樹形菜單（Tree）

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

服務器端代碼

????$id = isset($_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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