具有相同键的数组的Javascript concat值

let arr1 = [{id: 1, name: 'Alice'}, {id: 2, name: 'Bob'}];
let arr2 = [{id: 2, name: 'Bobby'}, {id: 3, name: 'Charlie'}];

let combinedArray = arr1.concat(arr2);

console.log(combinedArray);
// 输出: [{id: 1, name: 'Alice'}, {id: 2, name: 'Bob'}, {id: 2, name: 'Bobby'}, {id: 3, name: 'Charlie'}]

function mergeArraysByKey(arrays, key) {
  return arrays.reduce((acc, array) => {
    array.forEach(item => {
      let existingItem = acc.find(accItem => accItem[key] === item[key]);
      if (existingItem) {
        // 如果找到了相同键的对象，可以选择合并它们的属性
        Object.assign(existingItem, item);
      } else {
        // 如果没有找到相同键的对象，直接添加到累加器数组中
        acc.push(item);
      }
    });
    return acc;
  }, []);
}

let mergedArray = mergeArraysByKey([arr1, arr2], 'id');
console.log(mergedArray);
// 输出: [{id: 1, name: 'Alice'}, {id: 2, name: 'Bobby'}, {id: 3, name: 'Charlie'}]