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从对象数组生成特定对象

object json arrays javascript

Nikhil Savaliya · 技术社区 · 7 年前

我有一个数组,

var result = [
  {
    "sItem" : [
      "Pizza Margherita","Pizza marinara"
    ],
    "sImage" : [
   "https://assets.marthastewart.com/styles/wmax-300/d31/pizza-margherita-0606-mla102155/pizza-margherita-0606-mla102155_vert.jpg","https://www.silviocicchi.com/pizzachef/wp-content/uploads/2015/02/m-evid-672x372.jpg"
    ],
    "nQuantity" : 1,
    "eDeliveryStatus" : "n",
    "nPrice" : 215,
    "sReceiptId" : "pRjZpGzIDPpX",
  }
];

想使对象像,我正在运行一个循环通过标题数组推送数据。

[  
   {  
      "title":"Pizza Margherita",
      "subtitle":"Pizza Margherita",
      "quantity":1,
      "price":215,
      "currency":"INR",
      "image_url":"https://images.mcdelivery.co.in/hardcastle-restaurants-pvt-ltd/image/upload/q_auto:low,fl_lossy,w_300/v1484907263/Items/2754.png"
   },
   {  
      "title":"Pizza marinara",
      "subtitle":"Pizza marinara",
      "quantity":1,
      "price":215,
      "currency":"INR",
      "image_url":"https://www.silviocicchi.com/pizzachef/wp-content/uploads/2015/02/m-evid-672x372.jpg"
   }
]

这就是我尝试失败的方式:

result.forEach(el => {
  el.sItem.forEach(el2 => {
      elementRec.push({
          "title": el2,
          "subtitle": el2,
          "quantity": el.nQuantity,
          "price": el.nPrice,
          "currency": "INR",
          "image_url": el.sImage
      })
  });
})

我知道这是错误的,但对javascript来说是新的。

3 回复 | 直到 7 年前

Nina Scholz 7 年前

你可以绘制内部地图 sItem 以及相应的 sImage 通过一些破坏性和短暂的特性来制造新的物体。

var data = [{ sItem: ["Pizza Margherita", "Pizza marinara"], sImage: ["https://assets.marthastewart.com/styles/wmax-300/d31/pizza-margherita-0606-mla102155/pizza-margherita-0606-mla102155_vert.jpg", "https://www.silviocicchi.com/pizzachef/wp-content/uploads/2015/02/m-evid-672x372.jpg"], nQuantity: 1, eDeliveryStatus: "n", nPrice: 215, sReceiptId: "pRjZpGzIDPpX" }],
    result = data.reduce((r, { sItem, sImage, nQuantity: quantity, nPrice: price }) =>
        r.concat(sItem.map((title, i) => ({
            title, subTitle: title, quantity, price, currency: 'INR', image_url: sImage[i]
        }))),
        []
    );

console.log(result);

Guillaume Georges 7 年前

你就快到了。

在你身上 forEach ,添加 index 参数,并使用它从 sImage 数组:

el.sItem.forEach((el2, index) => {
      elementRec.push({
          "title": el2,
          "subtitle": el2,
          "quantity": el.nQuantity,
          "price": el.nPrice,
          "currency": "INR",
          "image_url": el.sImage[index]
      })
  });

var result = [
  {
    "sItem" : [
      "Pizza Margherita",
      "Pizza marinara"
    ],
    "sImage" : [
      "https://assets.marthastewart.com/styles/wmax-300/d31/pizza-margherita-0606-mla102155/pizza-margherita-0606-mla102155_vert.jpg",
      "https://www.silviocicchi.com/pizzachef/wp-content/uploads/2015/02/m-evid-672x372.jpg"
    ],
    "nQuantity" : 1,
    "eDeliveryStatus" : "n",
    "nPrice" : 215,
    "sReceiptId" : "pRjZpGzIDPpX",
  }
];

var elementRec = [];

result.forEach(el => {
  el.sItem.forEach((el2, index) => {
      elementRec.push({
          "title": el2,
          "subtitle": el2,
          "quantity": el.nQuantity,
          "price": el.nPrice,
          "currency": "INR",
          "image_url": el.sImage[index]
      })
  });
});

console.log(elementRec);

-1

mankowitz 7 年前

我想你是想做这样的事。首先创建一个新数组。我称之为 converted .然后按 result 把东西放进去 .forEach() 这样地。

var converted = [];
result.forEach(function(i){
    converted.push({

  "title": i.sItem[0],
  "subtitle": i.sItem[0],
  "quantity": i.nQuantity,
  "price": i.nPrice,
  "currency": "INR",
  "image_url": i.sImage[0]

  });
})

试试这个 fiddle