求助，怎么将一个arr2数组中的每一项添加到arr的每一项中

Question

    var arr = [
                {
                    "cube_uid": 10000000,
                    "category_id": 3,
                    "img_url": "https://www.sorcellry.com/moxiaochao/imgs/1.png",
                    "corporation": "a",
                    "num": 7,
                    "name": "奥利奥夹心饼干原味"
                },
                {
                    "cube_uid": 10000001,
                    "category_id": 2,
                    "img_url": "https://www.sorcellry.com/moxiaochao/imgs/2.png",
                    "corporation": "b",
                    "num": 8,
                    "name": "茶π(茶派)"
                }
            ]    var arr2 = [
            {
                "ylnum": 10
            },
            {
                "ylnum": 3
            }
    ]  

Answer 1

var arr = [
        {
            "cube_uid": 10000000,
            "category_id": 3,
            "img_url": "https://www.sorcellry.com/moxiaochao/imgs/1.png",
            "corporation": "a",
            "num": 7,
            "name": "奥利奥夹心饼干原味"
        },
        {
            "cube_uid": 10000001,
            "category_id": 2,
            "img_url": "https://www.sorcellry.com/moxiaochao/imgs/2.png",
            "corporation": "b",
            "num": 8,
            "name": "茶π(茶派)"
        }
    ]    var arr2 = [
        {
            "ylnum": 10
        },
        {
            "ylnum": 3
        }
    ];
    arr.forEach(function(item,index){
        Object.keys(arr2[index]).forEach(function(key){
            item[key]=arr2[index][key];
        })
    });
    console.log(arr);

Answer 2

concat