我编写了这个简单的代码,该代码解构了一个对象数组,以便根据每个键构建新的数组。我正在学习ES6,并希望使用解构将其重构为一行代码,但我也不太了解。

let candles = [{
  open: 1,
  high: 2,
  low: 0.5,
  close: 1.5,
  volume: 200
}];
let open = candles.map(x => x.open);
let high = candles.map(x => x.high);
let low = candles.map(x => x.low);
let close = candles.map(x => x.close);
let volume = candles.map(x => x.volume);

console.log(open, high, low, close, volume);


我认为它应该看起来与此类似?
let [open, high, low, close, volume] = candles.map(key => key.value);

但这显然是错误的!
如果有人可以指导我正确的方法,谢谢您的帮助!

最佳答案

这是使用Array.prototype.reduce()的解决方案:

const candles = [{open: 1, close: 2, low: 3, high: 4, volume: 5}, {open: 6, close: 7, low: 8, high: 9, volume: 10}];

const result = candles.reduce((a, v) => {
  Object.keys(v).forEach(k => (a[k] = a[k] || []).push(v[k]));
  return a;
}, {});

console.log(result);

10-06 15:47