Dynatree在加载时进行扩展

Question

我正在创建一个dynatree，它的节点选项expand = false。但是当我查看树时，它显示了所有在开始时的开销。如何在初始阶段获得所有崩溃的树。下面是我的代码

$(function(){
            // Attach the dynatree widget to an existing <div id="tree"> element
            // and pass the tree options as an argument to the dynatree() function:
            $("#tree").dynatree({
                onActivate: function(node) {
                    // A DynaTreeNode object is passed to the activation handler
                    // Note: we also get this event, if persistence is on, and the page is reloaded.
                    //alert("You activated " + node.data.key);
                },
                persist: false,
                checkbox: true,
                generateIds: false,

                classNames: {
                    checkbox: "dynatree-checkbox",
                    expanded: "dynatree-expanded"
                },
                selectMode: 3,
                children: {!JsonString},
                onSelect: function(select, node) {
                    // Get a list of all selected nodes, and convert to a key array:
                    var selKeys = $.map(node.tree.getSelectedNodes(), function(node){
                        return node.data.key;
                    });
                    jQuery(document.getElementById("{!$Component.selectedKeys}")).val(selKeys.join(", "));

                    // Get a list of all selected TOP nodes
                    var selRootNodes = node.tree.getSelectedNodes(true);
                    // ... and convert to a key array:
                    var selRootKeys = $.map(selRootNodes, function(node){
                        return node.data.key;
                    });
                },

            });

        });

Answer 1

在我的dynatree中，我在init上使用AJAX并展开整个树，但对代码的修改可能会对您有所帮助：

onPostInit: function(isReloading, isError) {
    this.$tree.dynatree('getRoot').visit(function(node){
        node.expand(false);
    });
}