Json中相同或者重复记录的值相加组成新的Json

 1 var data = [
 2     {"Networking": "WiFi", "count_value": "2000"},
 3     {"Networking": "WiFi", "count_value": "2890"},
 4     {"Networking": "WiFi", "count_value": "2900"},
 5     {"Networking": "CellNetwork", "count_value": "3010"},
 6     {"Networking": "CellNetwork", "count_value": "3000"}
 7 ];
 8 //现在想要把Networking中都为Wifi和CellNetwork的count_value合并
 9 var obj = {};
10 for (var i in data) {
11     if (obj[data[i].Networking]) {
12         obj[data[i].Networking].value = Number(obj[data[i].Networking].value) + Number(data[i].count_value);
13     } else {
14         obj[data[i].Networking] = {
15             value: data[i].count_value
16         }
17     }
18 }

//结果

console.log(JSON.stringify(obj));

                                              {"WiFi":{"value":7790},"CellNetwork":{"value":6010}}

for (var i in obj) {
    console.log(i);
    console.log(obj[i].value)
}                          //结果为：  WiFi  7790
                            //        CellNetwork  6010