10

这是我的代码:

$("#demo1").jstree({
        "themes": {
            "theme": "default",
            "dots": true,
            "icons": true,
            "url": "static/themes/default/style.css"
        },
        "ui" : {
                // this makes the node with ID node_4 selected onload
                "initially_select" : [ location.hash.slice(1).split('@')[1]]
            },
        "json_data" : {
            "data" : [
                { 
                    "data" : "A node", 
                    "attr" : { "id" : "1" ,time:1321},
                    "callback":function(){alert('sss')},
                    "children" : [ 
                        {
                            "data" : "ttt node", 
                            "children" : [ "Child 1", "Child 2" ]   
                        }
                     ]
                },
                { 
                    "attr" : { "id" : "2" }, 
                    "data" : { 
                        "title" : "Long format demo", 
                        "attr" : { "href" : "#" } 
                    } 
                },
                {
                    "data" : "sss node", 
                    "attr" : { "id" : "3" },
                    "children" : [ 
                        {
                            "data" : "bbb node"
                        }
                        ,
                        {
                            "data" : "kkkk node", 
                            "attr" : { "id" : "11" },
                            "children" : [ 
                                {
                                    "data" : "oooo node", 
                                    "children" : [ "pppp", "nnnn" ] 
                                }
                             ]
                        },
                    ]
                },
                {
                    "data" : "wwqq node",
                    "attr" : { "id" : "4" },
                    "children" : [ "Child 1", "Child 2" ]   
                },
                {
                    "data" : "hhh node",
                    "attr" : { "id" : "5" },
                    "metadata ":"i am the metadata",
                    "children" : [ 
                            {
                            "data" : "A node", 
                            "children" : [ 
                                {
                                    "data" : "ttt node", 
                                    "children" : [ "Child 1", "Child 2" ]   
                                }
                                ]
                            },
                            {
                            "data" : "bbb node"
                            }

                        ]   
                },
            ]
        },
        /*
        "sort":function (a, b) { 
            return this.get_text(a) < this.get_text(b) ? 1 : -1; 
            },
        ////*/
        "contextmenu":{
                "show_at_node":false,
                "items":{
                        //"ccp":false,
                        "sort" : {
                            // The item label
                            "label"             : "sort",
                            /* The function to execute upon a click
                            "action"            : function (obj) { 
                                                    var fn=function (a, b) {return this.get_text(a) < this.get_text(b) ? 1 : -1;}
                                                    this.changeSort(obj,fn);

                                                    },
                            //*/
                            // All below are optional 
                            "_disabled"         : false,        // clicking the item won't do a thing
                            "_class"            : "sort",   // class is applied to the item LI node
                            "separator_before"  : false,    // Insert a separator before the item
                            "separator_after"   : true,     // Insert a separator after the item
                            // false or string - if does not contain `/` - used as classname
                            "icon"              : false,
                            "submenu"           : { 
                                "name":{
                                        "label" : "name",
                                        "action": function (obj) { 
                                                        var fn=function (a, b) {return this.get_text(a) < this.get_text(b) ? 1 : -1;}
                                                        this.changeSort(obj,fn);
                                                    }
                                    },
                                "time":{
                                        "label" : "time",
                                        "action": function (obj) { 
                                                        var fn=function (a, b) {return this.get_text(a) < this.get_text(b) ? 1 : -1;}
                                                        this.changeSort(obj,fn);

                                                    }
                                    }
                                }
                        },
                        "icons":{
                            "label"             : "icons",
                            "action":function(obj){window.a=obj;},
                            "submenu"           : { 
                                "apple":{
                                        "label" : "apple",
                                        "action": function (obj) { 
                                                        this.set_theme('apple');
                                                    }
                                    },
                                "classic":{
                                        "label" : "classic",
                                        "action": function (obj) { 
                                                        this.set_theme('classic');
                                                    }
                                    },
                                "default":{
                                        "label" : "default",
                                        "action": function (obj) { 
                                                        this.set_theme('default');
                                                    }
                                    }
                                }

                        }
            }
        },
        "core" : { "initially_open" : [ ] },
        "plugins" : [ "themes", "json_data","crrm","ui","contextmenu","search","sort" ]
    })
    .bind("search.jstree", function (e, data) {
            alert("Found " + data.rslt.nodes.length + " nodes matching '" + data.rslt.str + "'.");
        });

我设置元数据:

"metadata ":"i am the metadata",

并希望在我右键单击“上下文菜单”时得到它:

"icons":{
                            "label"             : "icons",
                            "action":function(obj){console.log(this.data);},

我显示 this.data 跟随这篇文章

// the `metadata` property will be saved using the jQuery `data` function on the `li` node
    metadata : "a string, array, object, etc",

但我无法得到它,我该怎么办?

4

5 回答 5

9

JsTree 使用 jQuery 存储元数据:

.data("jstree", "a string, array, object, etc")

要访问此元数据,请使用:

.data("jstree")

例如,一旦您DateTime以 json 格式传递一些对象:

metadata : { lastModified : "/Date(1283198400000)/" }

访问它:

$.jstree
.bind("select_node.jstree", function (event, data) {
    alert( formatJsonDateTime( data.rslt.obj.data("jstree").lastModified ) );
});

function formatJsonDateTime(jsonDate) {
    var date = eval(jsonDate.replace(/\/Date\((\d+)\)\//gi, "new Date($1)"));
    return date.format("M/dd/yyyy HH:mm");
};
于 2010-09-24T19:59:54.437 回答
9

接受的答案不适用于最新版本的 jsTree。这是一个基于前一个的更新示例。

metadata : { lastModified : "/Date(1283198400000)/" }

访问数据:

$.jstree
.bind("select_node.jstree", function (event, data) {
    alert( data.rslt.obj.data("lastModified") );
});
于 2011-10-11T19:03:23.593 回答
3

您可以使用 jstree 中的 get_node 函数获取完整节点,例如

var node = $(container).jstree().get_node("node_id");

然后您可以从

node.original.metadata

于 2014-03-25T20:12:17.010 回答
0

这些解决方案都不适合我。做了以下事情:

alert(data.rslt.obj.data()[0].lastModified)

谢谢

于 2012-07-17T00:14:07.187 回答
0

我正在使用 jstree 1.0-rc3,日期为 2011-02-09。首先,我发现像这样为元数据分配一个字符串是"metadata ":"i am the metadata"行不通的。它必须是 JSON 对象。我的树表示从根文件夹“exercises”开始的目录结构,因此我希望每个节点都将路径存储在存储目录结构的服务器上。服务器发送 JSON 数据(为清楚起见进行了简化),如下所示:

[
    {
        "data":"Book1",
        "metadata":{"path":"exercises\/Book1"},
    },
    {
        "data":"vocabulary",
        "metadata":{"path":"exercises\/vocabulary"}
    }
]

我使用元数据中的路径值来为打开包含其他文件夹或文件的文件夹时发送的 AJAX 请求构建正确的 URL。用于配置树的 ajax 属性的 url 属性如下所示:

"url": function (node) {
    var path = "",
    url = "/tree_service/tree/format/json?path=";
    if(node === -1){
        url += "exercises";
    }
    else{
        path = encodeURIComponent(node.data().path);
        url += path;
    }
    return url;
}

正如文档所承诺的,我们可以在传递给 url 函数的节点上使用 data() 函数,并且潜伏在返回的对象中的是 path 属性。

于 2012-10-07T00:20:38.120 回答