如何在typescript中循环两个对象键？

const obj1 = { key1: "value1", key2: "value2" };
const obj2 = { key3: "value3", key4: "value4" };

for (let key in obj1) {
  console.log(key); // 输出：key1, key2
}

for (let key in obj2) {
  console.log(key); // 输出：key3, key4
}

const obj1 = { key1: "value1", key2: "value2" };
const obj2 = { key3: "value3", key4: "value4" };

const keys1 = Object.keys(obj1);
const keys2 = Object.keys(obj2);

for (let key of keys1) {
  console.log(key); // 输出：key1, key2
}

for (let key of keys2) {
  console.log(key); // 输出：key3, key4
}