如何在数组中添加object的key？

let array = [
  { id: 1, name: 'Alice' },
  { id: 2, name: 'Bob' }
];

array.forEach(obj => {
  obj.newKey = 'newValue';
});

console.log(array);

let array = [
  { id: 1, name: 'Alice' },
  { id: 2, name: 'Bob' }
];

let newArray = array.map(obj => {
  return { ...obj, newKey: 'newValue' };
});

console.log(newArray);

let array = [
  { id: 1, name: 'Alice' },
  { id: 2, name: 'Bob' }
];

for (let obj of array) {
  obj.newKey = 'newValue';
}

console.log(array);

let array = [
  { id: 1, name: 'Alice' },
  { id: 2, name: 'Bob' }
];

let newArray = array.reduce((acc, obj) => {
  acc.push({ ...obj, newKey: 'newValue' });
  return acc;
}, []);

console.log(newArray);