从嵌套数组对象中提取数据

function extractData(obj, key) {
  let result = [];
  
  if (Array.isArray(obj)) {
    for (let i = 0; i < obj.length; i++) {
      result = result.concat(extractData(obj[i], key));
    }
  } else if (typeof obj === 'object') {
    for (let prop in obj) {
      if (prop === key) {
        result.push(obj[prop]);
      } else {
        result = result.concat(extractData(obj[prop], key));
      }
    }
  }
  
  return result;
}

// 示例数据
const data = [
  {
    id: 1,
    name: 'John',
    children: [
      {
        id: 2,
        name: 'Alice',
        children: [
          {
            id: 3,
            name: 'Bob',
            children: []
          }
        ]
      },
      {
        id: 4,
        name: 'Eve',
        children: []
      }
    ]
  },
  {
    id: 5,
    name: 'Mike',
    children: []
  }
];

// 从示例数据中提取'name'属性的值
const extractedData = extractData(data, 'name');
console.log(extractedData); // ['John', 'Alice', 'Bob', 'Eve', 'Mike']