jquery – jstree图标以及如何“点击展开”

我的问题是,对于文件夹和文件都会出现相同的图标(类型中设置的默认图标).当我更改默认图标时,所有树图标都设置为该图标.如果我不使用类型插件,则默认文件夹图标用于所有图标.

jstree配置：

$("#agac_tutacagi").jstree({
    "plugins" : [ "themes","json_data","types","ui"],"core":{
        "animation":500,"Strings":{
            "loading":"Yükleniyor"
        }
    },"types":{
        "types":{
            "max_children" : -2,"max_depth" : -2,"folder" : {
                "valid_children" : [ "default","dizin","dosya" ],"icon" : {
                    "image" : "/static/p/js/jsTree/_demo/folder.png"
                }
            },"file" : {
                "valid_children" : "none","icon" : {
                    "image" : "/static/p/js/jsTree/_demo/file.png"
                }
            },"default" : {
                "icon" : {
                    "image" : "/static/p/js/jsTree/_demo/file.png"
                }
            }
        }
    },"json_data" : {
        "ajax" : {
            "url" : "/dokumantasyon/dokumanAgaciOgesiAl/"
        }
    }
});

示例JSON：

[{"data": {"icon": "folder","title": "Sıkça Sorulan Sorular"},"children": [{"data": {"icon": "file","attr": {"onclick": "dokuman_getir(4)"},"title": "Program makbuz basmadı"}}]}]

图标在数据字典中设置,如sjtree文档中所示.但它没用.我没有得到任何错误,一切都很好,除了树的icond.

我的第二个问题是,我如何配置jstree,所以当我点击一个父节点(一个文件夹)时,它会像扩展箭头一样被展开.