Extjs 展开节点出错的问题

Question

本帖最后由 Mr_Edwin 于 2010-07-24 11:38:00 编辑

Answer 1

信息太少 ，把loader 贴出来有了这个
tree.render("divTree");
就不要加上这个el: 'divTree',
了。

Answer 2

 var tree;            var loader = new Ext.tree.TreeLoader({
                url: "BTSystemOA/btrlzy/ConfiguringManagement/PostManagement/CreateTree.ashx"
            });            loader.on("beforeload", function(treeloader, node) {
                loader.baseParams.cDeptId = node.attributes.id;
            }, loader);            var Tree = Ext.tree;
            var treenode = null;
            Ext.Ajax.request({
                url: "BTSystemOA/btrlzy/ConfiguringManagement/PostManagement/CreateTree.ashx"
                , async: false
                , success: function(response, config) {
                    treenode = Ext.decode(response.responseText);
                }
                , failure: function() {
                    Ext.MessageBox.alert('请注意', '菜单加载出错，请稍后再试！');
                }
                 , method: "POST"
            });            var root = new Tree.AsyncTreeNode({
                id: 'root',
                text: '所有岗位',
                draggable: false,
                children: treenode
            });            root.appendChild(new Ext.tree.TreeNode({ id: 'q', text: 'ss', leaf: true }));
            tree = new Tree.TreePanel({
                useArrows: true,
                autoScroll: true,
                animate: true,
                enableDD: true,
                containerScroll: true,
                border: false,
                lines: true,
                loader: loader,
                root: root,
                listeners: {
                    click: function(node, event) {
                    
                    }
                }            });
            tree.render(Ext.getBody());
            root.expand(true); 完整的树改动了一下,在火狐多次展开都没问题
在ie8 上展开第二次就 报错  "错误:'dom'为空或不是对象"