js解析jsonArray嵌套

{
  "data": {
    "BTC": [
      14781.51,
      14888.9,
      14900.04,
      15098.88,
      15308,
      14880.01,
      14903.13,
      14971.9,
      15085,
      14955,
      14789,
      15067.99,
      15904.57
    ],
    "ETH": [
      865,
      872.4,
      863.31,
      876.97,
      882.86,
      862.34,
      872.8,
      873.99,
      880.66,
      881.33,
      920,
      927.07,
      1205.1
    ],
    "LTC": [
      253.31,
      256.01,
      250.74,
      252.18,
      254.03,
      246,
      248.99,
      250.44,
      250.19,
      245.51,
      245.47,
      246.29,
      268.77
    ],
    "REP": [
      77,
      75.51000902,
      77.40777699,
      77.5,
      74.24999999,
      75.89999204,
      76.56242205,
      75.23267389,
      75,
      74.53486201,
      75.89956063,
      75.1
    ],
    "ZEC": [
      546.0546,
      545,
      560,
      558.21460001,
      541.028181,
      545.600012,
      549.00000003,
      552.00000003,
      550.24500013,
      550,
      549.99,
      549.99999999
    ],
    "XMR": [
      363.89972768,
      363.80792688,
      374.02733624,
      371.73386644,
      371.02271409,
      375.5,
      376.6059407,
      378.00000004,
      378,
      379,
      384.5,
      387.62246001
    ],
    "ETC": [
      31.57099992,
      31.1,
      31.6652654,
      31.69230656,
      31,
      31.14,
      31.88,
      31.94201499,
      31.17,
      31.7,
      31.8810021,
      31.94147215
    ],
    "XRP": [
      2.19000001,
      2.2302,
      2.34403988,
      2.38545257,
      2.39000012,
      2.40001004,
      2.47,
      2.57652,
      2.76396723,
      2.80014755,
      2.749,
      2.74499994
    ],
    "DASH": [
      1144.68252953,
      1124.05293517,
      1142.00000001,
      1140,
      1100.2,
      1126.92937,
      1127.30001,
      1115.99999981,
      1117,
      1103.49,
      1129.99999999,
      1129.02030677
    ],
    "STR": [
      0.63000001,
      0.62231267,
      0.622,
      0.66999999,
      0.73,
      0.7249,
      0.75489999,
      0.81299991,
      0.8735,
      0.913,
      0.84290446,
      0.84010015
    ],
    "LSK": [
      21.4871988962,
      20.9578311135,
      20.9569305729,
      20.8209489423,
      20.8218494829,
      21.311593479200003,
      21.0165163426,
      20.950926968900003,
      20.2992357547,
      20.8625239,
      20.7895801114,
      20.5769024397
    ],
    "MAID": [
      1.1267263807,
      1.0934063784999999,
      1.0714932239000001,
      1.0818494408000001,
      1.1231242183,
      1.1282272817,
      1.145187463,
      1.1472887244,
      1.1381332283,
      1.1576449413,
      1.178207285,
      1.1643989958
    ],
    "FCT": [
      62.37744556,
      59.51822915500001,
      59.15230949120001,
      60.5799665224,
      66.3129580721,
      65.9176207487,
      63.037842,
      62.319961051700005,
      63.797598086200004,
      70.73836467059999,
      66.0300382336,
      66.39986024
    ],
    "XEM": [
      1.2056737733,
      1.188713592,
      1.2031222416,
      1.244246929,
      1.26075684,
      1.247248731,
      1.2840208055000002,
      1.3385035118,
      1.394337029,
      1.523414515,
      1.6688518219,
      1.6344811890000002
    ],
    "STEEM": [
      6.66071924,
      7.923895699999999,
      7.653423399999999,
      7.65408,
      7.410190620000001,
      7.49273462,
      8.807754339999999,
      8.90186388,
      8.36078796,
      8.29410554,
      8.0668,
      8.25830208
    ],
    "DOGE": [
      0.009005406,
      0.0091554961,
      0.009005406,
      0.008855315899999999,
      0.008855315899999999,
      0.009005406,
      0.0091554961,
      0.009005406,
      0.009005406,
      0.0091554961,
      0.009005406,
      0.0091554961
    ],
    "BTS": [
      0.8089856390000001,
      0.7813690606,
      0.7773166279,
      0.7924757280000001,
      0.8098861796,
      0.8013310439000001,
      0.799980233,
      0.866019877,
      0.8256456401,
      0.8966382574,
      0.8657196967999999,
      0.8732242018
    ],
    "GAME": [
      4.6837116606,
      4.4972997564,
      4.1582462205,
      4.2416963161,
      4.4798893048,
      4.3992909211,
      4.6256267919,
      4.5067554327,
      4.3965892993,
      4.5235655239,
      4.533921740799999,
      4.42765795
    ],
    "ARDR": [
      2.2363424899999997,
      2.1932666313,
      2.1105669862,
      2.087753291,
      2.1513914934,
      2.1066646436,
      2.0991601386000003,
      2.0565345502000003,
      2.0383736481,
      2.0997604990000003,
      2.0888039217000003,
      2.0835507682
    ],
    "DCR": [
      107.4643615099,
      105.2259177585,
      105.9654116812,
      105.11740261620001,
      101.75928671880001,
      102.2154105327,
      103.41207890000001,
      102.7333714678,
      102.2113581,
      103.48817458069999,
      105.3126698363,
      107.4645116
    ],
    "STORJ": [
      2.2286878949,
      2.1901147392,
      2.2259862730999997,
      2.1787078916000002,
      2.1314295101000003,
      2.1668507737000002,
      2.2608071763,
      2.1971689739,
      2.1841111352,
      2.2057241095999998,
      2.2444473554,
      2.2355920394999997
    ],
    "SC": [
      0.0286672091,
      0.0286672091,
      0.028517119,
      0.028517119,
      0.028817299199999997,
      0.028967389300000004,
      0.029717839800000003,
      0.0298679299,
      0.0298679299,
      0.031518921,
      0.031669011100000005,
      0.0321192814
    ],
    "GNT": [
      1.1639487255,
      1.1424858411999999,
      1.1454876432,
      1.0842508824000001,
      1.0693919625,
      1.0812490804,
      1.1192218757,
      1.0862020537000001,
      1.0608368268,
      1.1139687222,
      1.0608368268,
      1.0803485398
    ],
    "BCH": [
      2566.54071,
      2584.8886243645998,
      2757.6337743289,
      2613.9844907902,
      2599.0776921483,
      2619.072245,
      2628.4683355303,
      2584.1908554897004,
      2588.8888257097997,
      2588.1469303455,
      2541.819369629,
      2555.64416874
    ],
    "ZRX": [
      0.8702223997999999,
      0.8775768147,
      0.9203524932,
      0.8655696067,
      0.8378029382,
      0.9072946545,
      0.8778769948999999,
      0.9238045655000001,
      0.9698822262000001,
      1.0422256544,
      1.0024517779,
      1.0017013274
    ]
  }
}

一个jsonObject里面放了一个jsonArray 且这个jsonArray中 每个json对象是一个jsonArray

注：下面就是一个json对像

    "ZRX": [
      0.8702223997999999,
      0.8775768147,
      0.9203524932,
      0.8655696067,
      0.8378029382,
      0.9072946545,
      0.8778769948999999,
      0.9238045655000001,
      0.9698822262000001,
      1.0422256544,
      1.0024517779,
      1.0017013274
    ]

我们的目标是取出每个json对象的Key值，即这里的"ZRX"；并且，取出每个jsonArray中的第一个数字参数；

实现如下：

   needle.get('https://api.lionshare.capital/api/prices', function(error, response) {
   //get方法获取json数据
     if (!error && response.statusCode == 200)
       //第一步，读取出"data":[]数组数据
       var dataJson=response.body.data;
       var coinNames=[];
       var coinPrice0=[];
       var coinPrice4=[];
    //第二部， for 循环读取每个json对象中的Key（jsonArray的名称）
    for (let djson in  dataJson) {
        //dataJson.get(i);
        coinNames.push(djson);
        //第三步，[][]获取每个jsonArray中固定位置的数值
        coinPrice0.push(dataJson[djson][0]);
        coinPrice4.push(dataJson[djson][4]);
        console.log(dataJson[djson][0]);
    }
       //ejs传参
       res.render('account/market', {info:coinNames,coinPrice0:coinPrice0,coinPrice4:coinPrice4});
   });

然后，完成。