拼装商品属性以及对应的可选参数数组数据

 1 var arr = [{
 2     "id": 1,
 3     "name": "内存",
 4     "sid": 1,
 5     "sname": "16G"
 6 }, {
 7     "id": 1,
 8     "name": "内存",
 9     "sid": 2,
10     "sname": "32G"
11 }, {
12     "id": 2,
13     "name": "颜色",
14     "sid": 5,
15     "sname": "白色"
16 }, {
17     "id": 2,
18     "name": "颜色",
19     "sid": 6,
20     "sname": "金色"
21 }, {
22     "id": 2,
23     "name": "颜色",
24     "sid": 7,
25     "sname": "黄色"
26 }];

{
    "1": {
        "id": "1",
        "name": "内存",
        "res": [{
            "id": 1,
            "name": "内存",
            "sid": 1,
            "sname": "16G"
        }, {
            "id": 1,
            "name": "内存",
            "sid": 2,
            "sname": "32G"
        }]
    },
    "2": {
        "id": "2",
        "name": "颜色",
        "res": [{
            "id": 2,
            "name": "颜色",
            "sid": 5,
            "sname": "白色"
        }, {
            "id": 2,
            "name": "颜色",
            "sid": 6,
            "sname": "金色"
        }, {
            "id": 2,
            "name": "颜色",
            "sid": 7,
            "sname": "黄色"
        }]
    }
}

var outObj = {};
for (var i = 0, len = arr.length; i < len; i++) {
    var tmp = arr[i];
    if (!outObj.hasOwnProperty(tmp.sku_param_id)) {
        outObj[tmp.sku_param_id] = {};
        var inObj = {};
        var inArr = [];
        inObj["id"] = tmp.sku_param_id;
        inObj["name"] = tmp.param_web_name;
        inArr.push(tmp);
        inObj["res"] = inArr;
        outObj[tmp.sku_param_id] = inObj;
    } else {
        var inObj = outObj[tmp.sku_param_id];
        var inArr = inObj["res"];
        inArr.push(tmp);
        inObj["res"] = inArr;
    }
}