zTree点击节点内容改变当前节点及下级(一级)节点的状态

var zTree = $.fn.zTree.init($("#treeDemo"), setting, zNodes);
var setting = {
        check: {
                enable: true,
                chkStyle: "checkbox",
                chkboxType: {
                        "Y": "ps",
                        "N": "s"
                }
        },
        data: {
                simpleData: {
                        enable: true
                }
        },
        view: {
                showIcon: false
        },
        callback: {
                onClick: function zTreeOnClick(event, treeId, treeNode) {
                        var checkedFlag = treeNode.checked;
                        if (checkedFlag) {
                                // 如果已经选中,则取消选中状态
                                setChildrenCheckedState(treeNode, false);
                        } else {
                                // 如果没有选中,则设置为选中状态
                                setChildrenCheckedState(treeNode, true);
                        }
                }
        }
};

//设置选中的节点treeNode下所有的子节点的选中状态
function setChildrenCheckedState(treeNode, flag) {
        // 设置被点击的节点选中状态
        treeNode.checked = flag;
        // 需要更新才能正确显示更新后的状态
        zTree.updateNode(treeNode);

        if (treeNode.isParent) {
                for (var obj in treeNode.children) {
                        treeNode.children[obj].checked = flag;
                        zTree.updateNode(treeNode.children[obj]);
                }
        }
}