Function()treeNode.getCheckStatus

获取节点 checkbox / radio 半勾选状态。[setting.check.enable = true 时有效]

初始化节点数据时，由 zTree 增加此属性，请勿提前赋值

{
	checked: true, //等同于 treeNode.checked
	half: true  //规则见下表
}

setting.check.checkType = "checkbox"
treeNode.checked	treeNode.check_Child_State	treeNode.halfCheck	half
-	-	true	true

true	-1	false	false
true	0	false	true
true	1	false	true
true	2	false	false

false	-1	false	false
false	0	false	false
false	1	false	true
false	2	false	true

setting.check.checkType = "radio"
treeNode.checked	treeNode.check_Child_State	treeNode.halfCheck	half
-	-	true	true

true	-1	false	false
true	0	false	false
true	2	false	true

false	-1	false	false
false	0	false	false
false	2	false	true

var treeObj = $.fn.zTree.getZTreeObj("tree");
var halfCheck = treeObj.getNodes()[0].getCheckStatus();