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Федотов
Asked:2022-02-24 13:52:36 +0800 CST2022-02-24 13:52:36 +0800 CST

返回一个新的 Javascript 数组

  • 772
[
  {
    "date": "2021-02-01",
    "retail": 115404,
  },
  {
    "date": "2021-02-02",
    "retail": 100325,
  },
  {
    "date": "2021-02-03",
    "retail": 99414,
  },
  {
    "date": "2021-02-04",
    "retail": 96167,
  },
  {
    "date": "2021-02-05",
    "retail": 94092,
  },
]

告诉我如何从这里返回一个新数组[115404,100325,99414,96167,94092]

javascript

3 个回答

  1. Best Answer

    这是一个棘手的问题，但我会尝试猜测：

    const arr = arr.map(i => i.retail);
    • 3 
  2. let array = [
  {
    "date": "2021-02-01",
    "retail": 115404,
  },
  {
    "date": "2021-02-02",
    "retail": 100325,
  },
  {
    "date": "2021-02-03",
    "retail": 99414,
  },
  {
    "date": "2021-02-04",
    "retail": 96167,
  },
  {
    "date": "2021-02-05",
    "retail": 94092,
  },
];

let newArray = [];

array.forEach(function(item){
  newArray.push(item.retail);
});
    • 2 
  3. const arr= [
  {
    "date": "2021-02-01",
    "retail": 115404,
  },
  {
    "date": "2021-02-02",
    "retail": 100325,
  },
  {
    "date": "2021-02-03",
    "retail": 99414,
  },
  {
    "date": "2021-02-04",
    "retail": 96167,
  },
  {
    "date": "2021-02-05",
    "retail": 94092,
  },
];
const res = Array.from(arr, n => n.retail); 
console.log(res;)// [115404, 100325, 99414, 96167, 94092]
    • 1

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