layui+ztree 树状下拉框

一、效果图

【关闭】

　　

【展开】　　　　

　　　　　

二、代码

 【HTML】注:布局一定要用DIV不是select否则效果····

 <div class="layui-form-item">

                <label class="layui-form-label" style="float:left">部门</label>
                <div class="layui-input-block">
                    @*<select name="PDEPT_KEY" lay-filter="PDEPT_KEY" id="PDEPT_KEY" lay-search="" lay-verType="tips">
                       <option value="" selected></option>
                        </select>*@
                    <div name="PDEPT_KEY" lay-filter="PDEPT_KEY" id="PDEPT_KEY" class="layui-form-select select-tree" lay-search=""></div>

                </div>
        </div>

【js】

   ① 以下为固定方法

  function initSelectTree(id, isMultiple, chkboxType, zNodes) {
            var setting = {

                data: {
                    simpleData: {
                        enable: true
                    }
                },
                check: {
                    enable: false,
                    chkStyle: "radio",
                    radioType: "all",

                },
                chkboxType: { "Y": "ps", "N": "ps" },
                callback: {
                    onClick: onClick,
                    onCheck: onCheck
                }

            };
            if (isMultiple) {
                setting.check.enable = isMultiple;
            }
            if (chkboxType !== undefined && chkboxType != null) {
                setting.check.chkboxType = chkboxType;
            }
            var html = '<div class = "layui-select-title" >' +
                '<input id="' + id + 'Show"' + 'type = "text" placeholder = "请选择" value = "" class = "layui-input" readonly>' +
                '<i class= "layui-edge" ></i>' +
                '</div>';
            $("#" + id).append(html);

            $("#" + id).append('<dl  class="layui-anim layui-anim-upbit" ><div class="tree-content scrollbar">' +
                '<input hidden id="' + id + 'Hide" ' +
                'name="' + $(".select-tree").attr("id") + '">' +
                '<ul id="' + id + 'Tree" class="ztree scrollbar" style="margin-top:0;"></ul>' +
                '</div></dl>');
            $("#" + id).bind("click", function () {
                if ($(this).parent().find(".tree-content").css("display") !== "none") {
                    hideMenu()
                } else {
                    $(this).addClass("layui-form-selected");
                    var Offset = $(this).offset();
                    var width = $(this).width() - 2 - 15;
                    $(this).parent().find(".tree-content").css({
                        left: Offset.left + "px",
                        top: Offset.top + $(this).height() + "px",
                        height: 250 + "px",
                    }).slideDown("fast");
                    $(this).parent().find(".tree-content").css({
                         width,

                    });
                    $("body").bind("mousedown", onBodyDown);
                }
            });
            $.fn.zTree.init($("#" + id + "Tree"), setting, zNodes);
            hideMenu();
        }

        //function beforeClick(treeId, treeNode) {
        //    var check = (treeNode && !treeNode.isParent);
        //    if (!check) alert("只能选择城市...");
        //    return check;
        //}

        function onClick(event, treeId, treeNode) {
            var zTree = $.fn.zTree.getZTreeObj(treeId);
            if (zTree.setting.check.enable == true) {
                zTree.checkNode(treeNode, !treeNode.checked, false)
                assignment(treeId, zTree.getCheckedNodes());
            } else {
                assignment(treeId, zTree.getSelectedNodes());
                hideMenu();
            }
        }

        function onCheck(event, treeId, treeNode) {
            var zTree = $.fn.zTree.getZTreeObj(treeId);
            assignment(treeId, zTree.getCheckedNodes());
        }

        function hideMenu() {
            $(".select-tree").removeClass("layui-form-selected");
            $(".tree-content").fadeOut("fast");
            $("body").unbind("mousedown", onBodyDown);
        }

        function assignment(treeId, nodes) {
            var names = "";
            var ids = "";
            for (var i = 0, l = nodes.length; i < l; i++) {
                names += nodes[i].name + ",";
                ids += nodes[i].id + ",";
            }
            if (names.length > 0) {
                names = names.substring(0, names.length - 1);
                ids = ids.substring(0, ids.length - 1);
            }
            treeId = treeId.substring(0, treeId.length - 4);
            $("#" + treeId + "Show").attr("value", names);
            $("#" + treeId + "Show").attr("title", names);
            $("#" + treeId + "Hide").attr("value", ids);
        }

        function onBodyDown(event) {
            if ($(event.target).parents(".tree-content").html() == null) {
                hideMenu();
            }
        }

 ②以下为变动方法

Ajax("/BindCombox/GetDeptData", false, "POST", {}, function (data) {
                var jsondata = JSON.parse(data);
                if (jsondata.IsError) {
                    layer.msg("" + jsondata.ErrMsg, { icon: 5 });
                } else {
                    zNodes = jsondata.Data;//获取数据源


                    initSelectTree("PDEPT_KEY", true, { "Y": "ps", "N": "s" }, zNodes);
                    var treeObj = $.fn.zTree.getZTreeObj("PDEPT_KEYTree");
                    var node = treeObj.getNodes();
                    treeObj.selectNode(node[0]);
                    treeObj.checkNode(node[0], true, true, true);
                }
            });

　　③数据源格式

[
{"id":41.0,"name":"技术二部","pId":1.0,"open":true},
{"id":42.0,"name":"技术三部","pId":null,"open":true}
]

注：设置open为true，树状菜单为展开状态

三、未实现效果问题解析

　　①没有引用js。ztree和layui

　　②布局采用select，没有使用div

　　③网络请求数据源不正确。

注：此方法仍存在不足之处，望有能人指点