如何将js对象拆分成键值对数组？

const obj = { a: 1, b: 2, c: 3 };
const keyValueArray = Object.entries(obj);
console.log(keyValueArray);

const obj = { a: 1, b: 2, c: 3 };
const keyValueArray = [];
for (let key in obj) {
  if (obj.hasOwnProperty(key)) {
    keyValueArray.push([key, obj[key]]);
  }
}
console.log(keyValueArray);