如何从对象返回特定的键

const obj = { key1: 'value1', key2: 'value2', key3: 'value3' };
const keys = Object.keys(obj);
const specificKey = 'key2';

if (keys.includes(specificKey)) {
  const specificValue = obj[specificKey];
  console.log(specificValue);
} else {
  console.log('Specific key not found');
}

const obj = { key1: 'value1', key2: 'value2', key3: 'value3' };
const entries = Object.entries(obj);
const specificKey = 'key2';

for (const [key, value] of entries) {
  if (key === specificKey) {
    console.log(value);
    break;
  }
}