给一个list，如何实现图中的效果list:[ {id: 100, name: '100a', children: [ { id:101, name: '101a'}, { id:102, name: '102a'}, { id:103, name: '103a'}, ] }, {id: 200, name: '200b', children: [ { id:210, name: '210b'}, { id:220, name: '220b'}, { id:230, name: '230b', children: [ { id:231, name: '231b'}, { id:232, name: '232b'}, { id:233, name: '233b'}, ] }, ] }, {id: 300, name: '300c'}, {id: 400, name: '400c'}, {id: 500, name: '500c'} ],尝试过用递归组件，但不知道那个全选要怎么做