Javascript:如何覆盖/重命名对象的键？

const obj = { key: 'value' };
obj.key = 'new value';
console.log(obj); // 输出: { key: 'new value' }

const obj = { key: 'value' };
delete obj.key;
obj.key = 'new value';
console.log(obj); // 输出: { key: 'new value' }

const obj1 = { key: 'value' };
const obj2 = { key: 'new value' };
const mergedObj = Object.assign({}, obj1, obj2);
console.log(mergedObj); // 输出: { key: 'new value' }

const obj = { key: 'value' };
const { key: newKey } = obj;
console.log(newKey); // 输出: 'value'