console.log(findPathByLeafId(4, nodes))

改造
获取整个obj数据

function findPathByLeafId(leafId, nodes, path){
    if(path === undefined) {
        path = {};
      for(var i = 0; i < nodes.length; i++) {
          var tmpPath = path;
        //   tmpPath.push(nodes[i].id);
          if(leafId == nodes[i].id) {
            tmpPath=nodes[i];
            return tmpPath;
          if(nodes[i].children) {
            var findResult = findPathByLeafId(leafId, nodes[i].children,  tmpPath);
            if(findResult) {
              return findResult;
原文：https://blog.csdn.net/m0_37727560/article/details/91607575