javascript - 从 JSON 数组中获取数据

Question

我在从 JSON 数组获取数据时遇到一些问题。我正在使用节点+异步+请求(和express ofc)。

部分代码:

 function(data, callback){
                var URL = 'https://'+ server + '.api.pvp.net/api/lol/' + serw + '/v1.3/stats/by-summoner/' + data.id + '/summary?season=SEASON2016&api_key=' + api;
                request(URL, function(err, response, body){
                    if(!err & response.statusCode == 200){
                        var json = JSON.parse(body);
                        var assists = json['playerStatSummaries'][0]['aggregatedStats'].totalAssists;

主要问题是 [0] 正在返回数组中的第一个对象。

{
   "playerStatSummaries": [
      {
         "playerStatSummaryType": "CAP5x5",
         "aggregatedStats": {
            "totalNeutralMinionsKilled": 2042,
            "totalMinionKills": 4317,
            "totalChampionKills": 350,
            "totalAssists": 417,
            "totalTurretsKilled": 36
         },
         "modifyDate": 1453276061000,
         "wins": 20
      },
      {
         "playerStatSummaryType": "CoopVsAI",
         "aggregatedStats": {
            "totalNeutralMinionsKilled": 446,
            "totalMinionKills": 6100,
            "totalChampionKills": 1092,
            "totalAssists": 761,
            "totalTurretsKilled": 116
         },
         "modifyDate": 1453276061000,
         "wins": 80
      },

有时数组有点不同，如果玩家没有玩过任何“CAP5x5”游戏，COOPvsAI 就是 [0] 对象。

Any ideas how to fetch data by it's playerStatSummaryType instead of object number in array? Or how to make some kind of bypass that makes null when can't find "CAP5x5" mode? Thanks.

Answer 1

function filterOnPlayerStatSummary(myObject, filter)
{
    var result = [];
    for(var i = 0; i < myObject.length; i++) 
    {
        if (myObject[i].playerStatSummary == filter)
        { 
            result.push(myObject[i]);
        }
    }

    return result;
}