javascript - 在 JSON 中查找多次出现的特定值

Question

我有一个像这样的复杂 JSON:

{
  "a": {
    "b": {
      "c": {
        "price": {
          "type": "coin",
          "value": "currency"
        }
      }
    }
  },
  "e": {
    "f": {
      "price": {
        "type": "note",
        "value": "currency"
      }
    }
  },
  "price": {
    "type": "cents",
    "value": "dollars"
  }
}

我正在尝试编写一个 JavaScript 函数，它将在任何位置找到“价格”并提取它的“类型”和“值”。所以我的输出应该是:

"coin" : "currency"
"note" : "currency"
"cents" : "dollars"

Answer 1

您可以使用 for...in 循环创建递归函数以返回对象作为结果。

const data = {"a":{"b":{"c":{"price":{"type":"coin","value":"currency"}}}},"e":{"f":{"price":{"type":"note","value":"currency"}}},"price":{"type":"cents","value":"dollars"}}

function getPrice(data) {
  const result = {}
  for (let i in data) {
    if (typeof data[i] == 'object') Object.assign(result, getPrice(data[i]))
    if (i == "price") Object.assign(result, {
      [data[i].type]: data[i].value
    })
  }
  return result;
}

const result = getPrice(data);
console.log(result)