js 数据处理 -- 相同属性合并为一个数组

  var yy = [
    {
      addTime: 100,
      data: 0.32,
      dataKey: "value",
      platformSensorId: "L3_QJ_1",
    },
    {
      addTime: 100,
      data: 2.9,
      dataKey: "x",
      platformSensorId: "L3_QJ_1",
    }, {
      addTime: 100,
      data: 1.9,
      dataKey: "y",
      platformSensorId: "L3_QJ_2",
    },

    {
      addTime: 200,
      data: 0.32,
      dataKey: "value",
      platformSensorId: "L3_QJ_1",
    },
    {
      addTime: 200,
      data: 2.9,
      dataKey: "x",
      platformSensorId: "L3_QJ_1",
    }, {
      addTime: 200,
      data: 1.9,
      dataKey: "y",
      platformSensorId: "L3_QJ_2",
    }
  ]
  
  var tyy = [...yy];
 console.log(tyy)

  function sortArr(arr, str) {
    var _arr = [],
      _t = [],
      _tmp;

    arr = arr.sort(function (a, b) {
      var s = a[str],
        t = b[str];
      return s < t ? -1 : 1;
    });

    if (arr.length) {
      _tmp = arr[0][str];
    }
    for (var i in arr) {
      if (arr[i][str] === _tmp) {
        _t.push(arr[i]);
        // console.log(arr[i])
      } else {
        _tmp = arr[i][str];
        _arr.push(_t);
        _t = [arr[i]];
      }
    }
    _arr.push(_t);
    return _arr;
  }

  var arr2 = (sortArr(tyy, 'addTime'))
  console.log(arr2)