Question

("#tree").dynatree({                
minExpandLevel: 1,              
//persist: true,                
children: [{"title":"First Location",
"isFolder":true,
"expand":true,
"key":"location.92",
"icon":"location.gif",
"children":[{"title":"<span class='assetType'>First Location Child<\/span>",
"key":"locationid=92&typeid=1",
"expand":true,
"icon":"equipment.gif",
"children":[ (etc...)

所以我这样做：

var rootNode = $("#tree").dynatree("getRoot");
var title = rootNode.data.title;

title = null

...好的，我试试：

var rootNode = $("#tree").dynatree("getRoot");
var node = rootNode.getChildren();
var title = node.data.title;

无法读取未定义的属性'title'

如果我只是：

alert(node);

我明白了：

DynaTreeNode＆lt; location.92＆gt;：'First Location'

所以...？

因为我在控制台问：

jquery.dynatree.min.js:710:49:53.215 - Option 'title' is no longer supported.

相关？

Uncaught TypeError: Cannot read property 'parentNode' of null
ra

Answer 1

rootNode是（不可见）系统根，未设置rootNode.data.title。由于node.getChildren（）返回一个列表，因此它应该是

var rootNode = $("#tree").dynatree("getRoot");
var nodeList = rootNode.getChildren();
var title = nodeList[0].data.title;

Answer 2

我得到了答案：

//node = item which has isFolder() = false, islazy() = false

var topnode = node.parent;
topnode.reloadChildren(function(topnode, isOk){});

Answer 3

您可以使用以下方式阅读标题：

var rootNode = $("#tree").dynatree("getRoot");  
var realRootTitle = rootNode.childList[1].data.title;

DynaTree根节点null / undefined - 未定义的子节点

3 个答案: