从具有相同键、值的数组创建对象

Question

我有一个包含重复值的数组，我想将其转换为仅包含唯一值的对象，并将数组中的值用作键和值。

在下面的示例中，我可以创建一个仅包含唯一值的对象，但我不知道如何找到一个对象，而不是

{
  0: "Rookie Ticket Variation RPS",
  1: "Veteran Ticket Variation RPS",
  2: "Optics Season Ticket Red"
}

看起来像

{
  RookieTicketVariationRPS: "Rookie Ticket Variation RPS",
  VeteranTicketVariationRP: "Veteran Ticket Variation RPS",
  OpticsSeasonTicketRed: "Optics Season Ticket Red"
}

这里的区别在于：

1. 键和值相同，但是
2. 已从字符串中删除空格

let arr = [
   {
      "manufacturer":"Panini",
      "brand":"Contenders",
      "variation":"Rookie Ticket Variation RPS",
   },
   {
      "manufacturer":"Panini",
      "brand":"Contenders",
      "variation":"Veteran Ticket Variation RPS",
   },
   {
      "manufacturer":"Panini",
      "brand":"Contenders",
      "variation":"Rookie Ticket Variation RPS",
   },
   {
      "manufacturer":"Panini",
      "brand":"Contenders",
      "variation":"Optics Season Ticket Red",
   }
   ]
   

   let set = [...new Set(arr.map((o) => o.variation))]

   let newarray= { ...set}

    console.log(newarray)

谁能建议正确的方法来做到这一点？

Answer 1

获得 yield 字符串后，通过删除空格将其映射到对象以构造键并将其传递给 otoMotoCarObject(scrapy.Item)：

response

Answer 2

您可以使用.reduce：

const arr = [
   {
      "manufacturer":"Panini",
      "brand":"Contenders",
      "variation":"Rookie Ticket Variation RPS",
   },
   {
      "manufacturer":"Panini",
      "brand":"Contenders",
      "variation":"Veteran Ticket Variation RPS",
   },
   {
      "manufacturer":"Panini",
      "brand":"Contenders",
      "variation":"Rookie Ticket Variation RPS",
   },
   {
      "manufacturer":"Panini",
      "brand":"Contenders",
      "variation":"Optics Season Ticket Red",
   }
];

const newarray= arr.reduce((acc,{variation}) => {
  acc[variation.replace(/\s/g, '')] = variation;
  return acc;
}, {});

console.log(newarray);