怎么合并两个数组

Question

怎么合并两个数组呢，把data2里对应id的remark放进data1对应的id这里面，最终效果就是data3这样const data1 = [    { "id": 1, "url": "1111" },    { "id": 2, "url": "111" },    { "id": 3, "url": "22222" },    { "id": 4, "url": "222" },    { "id": 5, "url": "2222" },    { "id": 6, "url": "22222是" }]const data2 = [    { "id": 1, "remark": "备注1" },    { "id": 2, "remark": "备注2" },    { "id": 3, "remark": "" },    { "id": 4, "remark": "" },    { "id": 5, "remark": "" },    { "id": 6, "remark": "beizhu6" }]function fun(arr1, arr2) {    arr1.map(item => {        arr2.map(item2 => {            if (item.id == item2.id) {            }        });    });    arr2 = [];    return arr1}fun(data1,data2);data3=[    { "id": 1, "url": "1111", "remark": "备注1" },    { "id": 2, "url": "111", "remark": "备注2" },    { "id": 3, "url": "22222", "remark": "" },    { "id": 4, "url": "222", "remark": "" },    { "id": 5, "url": "2222", "remark": "" },    { "id": 6, "url": "22222是", "remark": "beizhu6" }]

Answer 1

const data3 = []

for (let i = 0; i < data1.length; i++) {

    data3.push({

        ...data1[i],

        ...data2[i],

    })

}

Answer 2

data1.map(o=>({...o,...data2.filter(v=>v.id===o.id).shift()}))

// 如果两个数组的结构一定相同:

data1.map((o, i) => ({ ...o, ...data2[i] }))

Answer 3

基本上只能通过数值映射或者循环两个数组来处理