js 空对象比较

function objectsAreEqual(obj1, obj2) {
  return JSON.stringify(obj1) === JSON.stringify(obj2);
}

const objA = {};
const objB = {};
console.log(objectsAreEqual(objA, objB)); 

function deepEqual(obj1, obj2) {
  if (obj1 === obj2) {
    return true;
  }

  if (typeof obj1 !== 'object' || obj1 === null || typeof obj2 !== 'object' || obj2 === null) {
    return false;
  }

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

  if (keys1.length !== keys2.length) {
    return false;
  }

  for (const key of keys1) {
    if (!keys2.includes(key) ||!deepEqual(obj1[key], obj2[key])) {
      return false;
    }
  }

  return true;
}

const objC = { a: 1 };
const objD = { a: 1 };
console.log(deepEqual(objC, objD));