Question

我是Javascript的新手。我想从我的API数据中创建这样的数组。这就是我想要的。

let consumptionDay2 = [
  {
    data: [
      { x: "0", y: 33 },
      { x: "1", y: 55 },
      { x: "2", y: 66 },
      { x: "3", y: 550 },
      { x: "4", y: 23 },
      { x: "5", y: 346 },
      { x: "6" ,y: 56 },
      { x: "7", y: 87 },
      { x: "8", y: 675 },
      { x: "9", y: 432 },
      { x: "10", y: 234 },
      { x: "11", y: 765 }
    ]
  }
]

这就是我尝试过的。

let tempLineChart = []
let LineChartData;

for (j = 0; j < consumptionData.length; j++) {
  let tempconsumptionData = {}    
  tempconsumptionData["x"] = consumptionData[j].time
  tempconsumptionData["y"] = consumptionData[j].powerFactor
  tempLineChart.push(tempconsumptionData)
}

LineChartData= {data: tempLineChart};
lineChart.push(LineChartData)

有人可以帮我把它作为上面的模型。

Answer 1

按照您的代码并假设您的输入，这应该有效：

let result = [];
let lineChartData = {
   data: consumptionData.map(item => ({
       x: item.time,
       y: item.powerFactor
   }));
};
result.push(lineChartData)

Answer 2

如果我不得不猜（和我一样），你需要像

这样的东西

＆＃13;

// just guessing here
const consumptionData = [{"time":"0","powerFactor":33},{"time":"1","powerFactor":55},{"time":"2","powerFactor":66},{"time":"3","powerFactor":550},{"time":"4","powerFactor":23},{"time":"5","powerFactor":346},{"time":"6","powerFactor":56},{"time":"7","powerFactor":87},{"time":"8","powerFactor":675},{"time":"9","powerFactor":432},{"time":"10","powerFactor":234},{"time":"11","powerFactor":765}]

const consumptionDay2 = [{
  data: consumptionData.map(({time, powerFactor}) => ({x: time, y: powerFactor}))
}]

console.info('consumptionDay2 =', consumptionDay2)

＆＃13;

这是...将每个consumptionData条目time和powerFactor属性映射到具有x和y属性的新对象。

然后，您可以将该数组放入其他对象（如consumptionDay2[0].data）

中

Javascript数组创建错误

2 个答案: