组件接受一个数组类型参数treeData 格式如下: 其中子节点可选的参数isLong,可以实现额外的样式

  [{
      name:'节点1'
  },
  {
      name:'节点1',
      children:[
          {name:'节点2'}
      ]
  },
  {
      name:'节点1',
      children:[
          {name:'节点2',children:[{name:'节点3'}]}
      ]
  },
  {
      name:'节点1',
      children:[
          {name:'节点5'},
          {name:'节点5',isLong:true},
          {name:'节点26',children:[
              {name:'节点3'},
              {name:'节点3'},
              {name:'节点33',
                  children:[
                      {name:'节点3'},
                      {name:'节点3'},
                      {name:'节点3'}
                  ]
              }
          ]},
          {name:'节点3',children:[{name:'节点3'},{name:'节点3'}]},
          {name:'节点4',children:[{name:'节点3'}]},
          {name:'节点5',isLong:true},
      ]
  }]