onClick: function (e, treeId, treeNode, clickFlag) {
var treeObj = $.fn.zTree.getZTreeObj(id);
treeObj.checkNode(treeNode, !treeNode.checked, true);
}
勾选 或 取消勾选 单个节点。[setting.check.enable = true 时有效]
zTreeObj.checkNode
Function(treeNode, checked, checkTypeFlag, callbackFlag)zTreeObj.checkNode