数据例子：
const arr1 = [
{ id: 1, name: 'John' },
{ id: 2, name: 'Alice' },
{ id: 3, name: 'Bob' }
];
const arr2 = [
{ id: 2, age: 30 },
{ id: 3, age: 25 },
{ id: 4, age: 28 }
];
代码：
const mergedArray = arr1.map((item) => {[......]