JS map生成双方括号

Question

我使用以下方法合并子数组：

var myArray = [
        {
            "QuestionId": 1,
            "mySeries": [{ "name": "Male", "data": [1] }],
            "mySeries1": [
                { "name": "Male", "data": [0] },
                { "name": "Female", "data": [0] },
                { "name": "Unknown", "data": [0] }
            ],
            "mySeries3": []
        },
        {
            "QuestionId": 2,
            "mySeries": [{ "name": "Banana", "data": [1] }],
            "mySeries1": [
                { "name": "Orange", "data": [0] },
                { "name": "Banana", "data": [0] },
                { "name": "None", "data": [0] }
            ],
            "mySeries3": []
        }
    ];
    var res = [];
    for (let i = 0; i < myArray.length; i++) {
        res = myArray[i].mySeries1.map(obj => myArray[i].mySeries.find(o => o.name === obj.name) || obj);
        myArray[i].mySeries3.push(res);

有效；但是，我得到双方括号：

"mySeries3": **[** [
                  { "name": "Orange", "data": [0]},
                  { "name": "Banana","data": [1]},
                  {"name": "None", "data": [0] 
              ]  **]**

推送的方式正确吗？

Answer 1

我用了@pilchard`

myArray[i].mySeries3 = myArray[i].mySeries3.concat(res)

成功了。`

JS map生成双方括号

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