Question

我试图使用Chart.js来显示未知的JSON数据（我做知道的数据的唯一部分是它将包含＆＃34; time＆＃34;）

我有几个数据集，所以我如何从这些格式中获取数据......：

数据集1：

dataset1 = [ { "time": "2017-03-02 09:00", "volts": 10, "amps": 4.5 },{ "time": "2017-03-02 09:10", "volts": 9.87, "amps": 4.15 }, ...]

数据集2：

dataset2 = [ { "level": 1.23, "time": "2017-03-02 09:00", "volts": 3.5 }, { "level": 1.56, "time": "2017-03-02 09:10", "volts": 3.6 }, ...]

...以此格式（对于dataset1）：

data[ "time" ]  = [ "2017-03-02 09:00", "2017-03-02 09:10", ...]
data[ "volts" ] = [ 10, 9.87 ...]
data[ "amps" ]  = [ 4.5, 4.15 ...]

...或此格式（对于dataset2）：

data[ "time" ]  = [ "2017-03-02 09:00", "2017-03-02 09:10", ...]
data[ "level" ] = [ 1.23, 1.56 ...]
data[ "volts" ] = [ 3.5, 3.6 ...]

我事先不知道键（例如伏特，放大器，电平）是什么，所以我无法宣布任何阵列进入。

我希望有人可以提供帮助。

Answer 1

您可以使用一些动态数组实现此目的：

var dataset1 = [ { "time": "2017-03-02 09:00", "volts": 10, "amps": 4.5 },{ "time": "2017-03-02 09:10", "volts": 9.87, "amps": 4.15 }];
var dataset2 = [ { "level": 1.23, "time": "2017-03-02 09:00", "volts": 3.5 }, { "level": 1.56, "time": "2017-03-02 09:10", "volts": 3.6 }];
var data = [];
var datasets = [dataset1,dataset2];
for (var i in datasets) {
  var dataset = datasets[i];
  for (var j in dataset) {
    var d = dataset[j];
    for (var k in d) {
      if (!data[k]) data[k] = [];
      data[k].push(d[k]);
    }
  }
}

工作示例：https://jsfiddle.net/mspinks/zhuxz2z6/1/

如何将JSON数据与未知名称

1 个答案: