js json合并

const json1 = { a: 1, b: 2 };
const json2 = { b: 3, c: 4 };
const mergedJson = Object.assign({}, json1, json2);
console.log(mergedJson); // 输出：{ a: 1, b: 3, c: 4 }

const json1 = { a: 1, b: 2 };
const json2 = { b: 3, c: 4 };
const mergedJson = { ...json1, ...json2 };
console.log(mergedJson); // 输出：{ a: 1, b: 3, c: 4 }

function deepMerge(obj1, obj2) {
  const result = { ...obj1 };
  for (const key in obj2) {
    if (obj2.hasOwnProperty(key)) {
      if (typeof obj2[key] === 'object' && !Array.isArray(obj2[key])) {
        result[key] = deepMerge(result[key] || {}, obj2[key]);
      } else {
        result[key] = obj2[key];
      }
    }
  }
  return result;
}

const json1 = { a: 1, b: { x: 10 } };
const json2 = { b: { y: 20 }, c: 4 };
const mergedJson = deepMerge(json1, json2);
console.log(mergedJson); // 输出：{ a: 1, b: { x: 10, y: 20 }, c: 4 }