Ext.tree.TreePanel 在IE下不正常加载

Ext.tree.TreePanel  在IE下不正常加载,两种解决方法 1不停的加载，直到true 2 使用Ext.Ajax.request

 

|<script language ="javascript" type="text/javascript">

 

                   //  var appmenu = new AppMenuView();

                    // appmenu.render('context');

                     var _url = 'http://localhost:14145/Menu/GetMenuFatherTree';
                    // _url="menu.ashx?model=0";

                     var tree = new Ext.tree.TreePanel({
                         id: 'selectTree',
                         plugins: new NodeMouseoverPlugin(),
                         height: 200,
                         autoScroll: true,
                         split: true,
                         loader: new Ext.tree.TreeLoader({ url: _url
                         , listeners: {
                             "loadexception": function(loader, node, response) {
                                 node.loaded = false;
                                 node.reload.defer(10, node); //不停的加载，直到true
                             }
                         }
                     }),
                         root:
                         new Ext.tree.AsyncTreeNode({
                           expanded: true
                          }),
                         rootVisible: false,
                         requestMethod: "GET"
                     });

                     tree.on('mouseover', function(node, e) {
                         if (!node.isLeaf()) {
                             e.stopEvent();

                             tree.collapseAll();
                             node.expand();
                         }

                     });

                     tree.render('context');
                               
    </script>
    
    |<script language ="javascript" type="text/javascript">
    
        Ext.BLANK_IMAGE_URL = '../js/ext/images/default/s.gif';

       
            var forumTree = new Ext.tree.TreePanel({
                
                useArrows: true,
                enableDD: true,
                width: 200,
                height: 300,
                rootVisible: false,
                root: new Ext.tree.AsyncTreeNode({})
            });

            forumTree.render('Div1');

           

            // 由于使用TreeLoader在IE下无法正常加载数据,所以使用Ajax先获取数据再填充数据到root node下 
            Ext.Ajax.request({
            url: 'Menu/GetMenuFatherTree',
                success: function(request) {
                    var data = Ext.util.JSON.decode(request.responseText);
                    forumTree.getRootNode().appendChild(data);
                    forumTree.getRootNode().expandChildNodes(true);

                    
                },
                failure: function() {
                  

                    Ext.MessageBox.show({
                        title: '版块管理',
                        msg: '对不起,加载数据出现异常,请重试!',
                        buttons: Ext.MessageBox.OK,
                        icon: Ext.MessageBox.ERROR
                    });
                }
            });
      
    -->
    </script>