el-tree实现树形结构叶子节点和非叶子节点的区分显示的写法

<el-tree
            :data="dimListTree"
            ref="dimListTree"
            row-key="getGroup"
            :props="treeProps"
            :allow-drop="allowDropTree"
            draggable
            default-expand-all
            id="left2_tree"
            node-key="id"
            style="margin-left: 10px"
        />

//

treeProps:{
  children:'children', //叶子节点数据
  label:function (data,node) { //显示内容
    if (node.isLeaf){
      //是叶子节点
      return data.code+'-'+data.desc
    }
    else{
      return data.desc
    }

  }
},