使用递归获取所有树子项

function getAllChildren(tree, result) {
  if (!tree || !tree.children) {
    return;
  }
  
  for (let i = 0; i < tree.children.length; i++) {
    const child = tree.children[i];
    result.push(child);
    getAllChildren(child, result);
  }
}

// 示例用法
const tree = {
  id: 1,
  name: 'Root',
  children: [
    {
      id: 2,
      name: 'Child 1',
      children: [
        {
          id: 3,
          name: 'Grandchild 1',
          children: []
        },
        {
          id: 4,
          name: 'Grandchild 2',
          children: []
        }
      ]
    },
    {
      id: 5,
      name: 'Child 2',
      children: []
    }
  ]
};

const result = [];
getAllChildren(tree, result);
console.log(result);