ztree使用实例

一、当某节点被选择或被取消选择时获取所有被选择的节点：

<link rel="stylesheet" href="./static/libs/ztree/css/metroStyle/metroStyle.css" type="text/css"><!-- ztree -->
<script src="./static/libs/ztree/js/jquery.ztree.core-3.5.js"></script><!-- ztree -->
<script src="./static/libs/ztree/js/jquery.ztree.exedit.js"></script><!-- ztree -->
<script src="./static/libs/ztree/js/jquery.ztree.excheck-3.5.js"></script><!-- ztree -->
<script src="./static/libs/ztree/js/jquery.ztree.exhide-3.5.js"></script><!-- ztree -->
<style>
ul.ztree {border: 0 solid #617775;background: #ffffff;100%;height:100%;overflow-y:hidden;overflow-x:hidden;}
</style>

<ul id="treeDemo" class="ztree"></ul>

var setting = {
    check: {
        enable: true,
        chkboxType: {
            "Y": "ps",
            "N": "ps"
        }//设置子父关联关系
    },
	data: {
		simpleData: {
			enable: true
		}
	},
    callback: {
        beforeClick: beforeClick,
        onCheck: onCheck
    }
};

function beforeClick(treeId, treeNode) {
  var zTree = $.fn.zTree.getZTreeObj("treeDemo");
  zTree.checkNode(treeNode, !treeNode.checked, null, true);
  return true;//此处一定设置为true，否则当取消选择时，onCheck函数不会起作用
}

function onCheck(e, treeId, treeNode) {
  var zTree = $.fn.zTree.getZTreeObj("treeDemo"),
      nodes = zTree.getCheckedNodes(true),
      v = "";
  for (var i=0, l=nodes.length; i<l; i++) {
      if(nodes[i].isParent){

      }else{
          v += nodes[i].name + ",";//name为获取节点名称 ，id为获取id，pId为获取pId
      }
  }
  if (v.length > 0 ) {
    v = v.substring(0, v.length-1);
  }
  alert(v);
}

var zNodes =[
	{ id:1, pId:0, name:"根部门", open:true},
	{ id:11, pId:1, name:"一级部门1", open:true},
	{ id:111, pId:11, name:"一级部门1子部门1"},
	{ id:112, pId:11, name:"一级部门1子部门2"},
	{ id:12, pId:1, name:"一级部门2", open:true},
	{ id:121, pId:12, name:"一级部门2子部门1"},
	{ id:122, pId:12, name:"一级部门2子部门2"}
];

$.fn.zTree.init($("#treeDemo"), setting, zNodes);

二、点击获取当前节点值：

var setting = {
	data: {
		simpleData: {
			enable: true
		}
	},
    callback: {
        onClick: onClick
    }
};

function onClick(event, treeId, treeNode) {
  alert(treeNode.id + ", " + treeNode.name);
  //你的ajax代码
}

var zNodes =[
  { id:1, pId:0, name:"普通的父节点", t:"我很普通，随便点我吧", open:true},
  { id:11, pId:1, name:"叶子节点 - 1", t:"我很普通，随便点我吧"},
  { id:12, pId:1, name:"叶子节点 - 2", t:"我很普通，随便点我吧"},
  { id:13, pId:1, name:"叶子节点 - 3", t:"我很普通，随便点我吧"},
  { id:2, pId:0, name:"NB的父节点", t:"点我可以，但是不能点我的子节点，有本事点一个你试试看？", open:true},
  { id:21, pId:2, name:"叶子节点2 - 1", t:"你哪个单位的？敢随便点我？小心点儿..", click:false},
  { id:22, pId:2, name:"叶子节点2 - 2", t:"我有老爸罩着呢，点击我的小心点儿..", click:false},
  { id:23, pId:2, name:"叶子节点2 - 3", t:"好歹我也是个领导，别普通群众就来点击我..", click:false},
  { id:3, pId:0, name:"郁闷的父节点", t:"别点我，我好害怕...我的子节点随便点吧...", open:true, click:false },
  { id:31, pId:3, name:"叶子节点3 - 1", t:"唉，随便点我吧"},
  { id:32, pId:3, name:"叶子节点3 - 2", t:"唉，随便点我吧"},
  { id:33, pId:3, name:"叶子节点3 - 3", t:"唉，随便点我吧"}
];

$.fn.zTree.init($("#treeDemo"), setting, zNodes);

三、获取第一个父节点的第一个子节点 ：

    var zTree = $.fn.zTree.getZTreeObj("treeDemo");
    console.log(zTree.getNodes()[0].children[0]);

四、获取所有节点：

一般情况下，通过zTree官方API的方法获取得到的是一个包含所有子节点的根节点（子节点都处于 children 属性下）

var treeObj = $.fn.zTree.getZTreeObj(“tree");
var nodes = treeObj.getNodes();

当我们需要一次获取所有树节点的时候，有两种方法：

一种是通过递归的方式（此处就不提及了）。

另一种就是通过zTreet提供的方法：

var treeObj = $.fn.zTree.getZTreeObj(”tree“);
var node = treeObj.getNodes();
var nodes = treeObj.transformToArray(node);

这种方法得到的就是整颗树的所有节点集合了。

五、取消节点选择：

var treeId = $.fn.zTree.getZTreeObj("#tree-id");    	
treeId.checkAllNodes(false);
treeId.cancelSelectedNode();

六、设置下拉树：

下拉树html：

<div class="form-group">
	  <label class="col-lg-4 col-md-4 col-sm-4 control-label font-normal" style="text-align: right;">用户列表：</label>
	  <div class="col-lg-5 col-md-5 col-sm-5" style="position:relative;z-index:9999999;">
	        <input type="text" class="form-control" name="addUserModalUsers" id="add-user-modal-users" onfocus="this.blur();" onclick="showMenu();"/>
<!--onfocus="this.blur();" 是为了禁止用户输入-->
	        <div id="add-user-modal-users-content" style="display:none; position: absolute;  100%;">
	        <ul id="add-user-modal-users-tree" class="ztree" style=" 100%;height: 200px; overflow: auto;border: 1px solid #e2e2e2;box-shadow: 0 0 10px #ccc;"></ul>
	        </div>
	   </div>
</div>

下拉树设置： 

/**
 * 增加用户下拉树
 */
var UsersTreeSetting = {
		check : {
			enable : true,
			chkboxType : {
				"Y" : "ps",
				"N" : "ps"
			}
		},
		view : {
			dblClickExpand : false
		},
		data : {
			simpleData : {
				enable : true
			}
		},
		callback : {
			beforeClick : function(treeId, treeNode) {
				var zTree = $.fn.zTree.getZTreeObj("add-user-modal-users-tree");
				zTree.checkNode(treeNode, !treeNode.checked, null, true);
				return true;
			},
			onCheck : function(e, treeId, treeNode) {
				var zTree = $.fn.zTree.getZTreeObj("add-user-modal-users-tree"),
					nodes = zTree.getCheckedNodes(true), 
					v = "";
				for (var i = 0, l = nodes.length; i < l; i++) {
					if (nodes[i].isParent) {

					} else {
						v += nodes[i].name + ",";//只获取最末端节点的值
					}
				}
				if (v.length >= 0){
					v = v.substring(0, v.length - 1);
					$("#add-user-modal-users").val(v).change();
				}
			}
		}
};

function showMenu() {
	var parentDept = $("#add-user-modal-users");
	var parentDeptOffset = $("#add-user-modal-users").offset();
	$("#add-user-modal-users-content").css({
		right : -10 + "px",
		top : (parentDept.outerHeight() + 5) + "px"
	}).slideDown("fast");

	$("body").bind("mousedown", onBodyDown);
}

function hideMenu() {
	$("#add-user-modal-users-content").fadeOut("fast");
	$("body").unbind("mousedown", onBodyDown);
}

function onBodyDown(event) {
	if (!(event.target.id == "menuBtn"
			|| event.target.id == "add-user-modal-users"
			|| event.target.id == "add-user-modal-users-content" || $(event.target).parents(
			"#add-user-modal-users-content").length > 0)) {
		hideMenu();
	}
}

通过异步请求获得节点数据：

        $.ajax({
            type: "GET",
            url: 'data/' + 'user' + '.json',
            data: {},
            dataType: "json",
            success: function(data){
                $.fn.zTree.init($("#add-user-modal-users-tree"), UsersTreeSetting, data);
                var usersTreeObj = $.fn.zTree.getZTreeObj("add-user-modal-users-tree");
                usersTreeObj.expandAll(true);
            },
            error: function(data){
                alert("error");
                console.log(data);
            }
        });

七、通过代码设置某一节点样式：

            $.fn.zTree.init($("#department-tree"), departmentTreeSetting, data);
            var zTree_Menu = $.fn.zTree.getZTreeObj("department-tree");
            var curMenu = zTree_Menu.getNodes()[0];
            zTree_Menu.selectNode(curMenu);
            var a = $("#" + zTree_Menu.getNodes()[0].tId + "_a");
            a.addClass("cur");