配置項(xiàng)：

callback: {
    onClick: zTreeOnClickOrg,
    beforeDrag: beforeDrag,
    beforeDrop: beforeDrog

},

方法

// 拖拽排序 只允許同級(jí)排序
var dragId;
//用于捕獲節(jié)點(diǎn)被拖拽之前的事件回調(diào)函數(shù)，并且根據(jù)返回值確定是否允許開(kāi)啟拖拽操作
function beforeDrag(treeId, treeNodes) {
    // console.log(treeNodes)
    for (var i = 0, l = treeNodes.length; i < l; i++) {
        dragId = treeNodes[i].parentCode;
        if (treeNodes[i].drag === false) {
            return false;
        }
    }
    return true;
}
//用于捕獲節(jié)點(diǎn)拖拽操作結(jié)束之前的事件回調(diào)函數(shù)，并且根據(jù)返回值確定是否允許此拖拽操作
function beforeDrog(treeId, treeNodes, targetNode, moveType) {
    // console.log(treeNodes, targetNode)
    //targetNode 被拖拽放開(kāi)的目標(biāo)節(jié)點(diǎn)
    //treeNodes 被拖拽的節(jié)點(diǎn)
    if (targetNode.parentCode == dragId) {
        // console.log(targetNode.name, moveType)
        if (moveType == 'prev') {
            var sortKey = targetNode.sortKey * 1 - 1
            // console.log(sortKey)
        } else {
            var sortKey = targetNode.sortKey * 1 + 1
            // console.log(sortKey)
        }
        setOrgCode(treeNodes[0].orgCode, treeNodes[0].orgName, sortKey);
        var obj = {
            'formId': 'formE1',
            'url': 'mgmt/setOrg.do',
            'error': '排序失敗'
        }
        org(obj, null);
    } else {
        return false;
    }
}