Jquery分组并在json对象中获取多个键？答案

【问题标题】：Jquery grouping and getting multiple keys in json object?Jquery分组并在json对象中获取多个键？
【发布时间】：2020-11-09 19:23:52
【问题描述】：

数据来源：

{
    "status": 1,
    "data": {
        "tierpricing": [
          { "product_id": "1", "product_name_en": "product 1" },
          { "product_id": "1", "product_name_en": "product 1" },
          { "product_id": "1", "product_name_en": "product 1" },
          { "product_id": "1", "product_name_en": "product 1" },
          { "product_id": "2", "product_name_en": "product 2" },
          { "product_id": "2", "product_name_en": "product 2" },
          { "product_id": "2", "product_name_en": "product 2" },
          { "product_id": "3", "product_name_en": "product 3" },
          { "product_id": "3", "product_name_en": "product 3" },
          { "product_id": "3", "product_name_en": "product 3" }
       ]
    }
}

使用以下按产品名称分组：

 var tierprice = data.data.tierpricing.reduce(function(result, current) {
    result[current.product_name_en] = result[current.product_name_en] || [];
    result[current.product_name_en].push(current);
    return result;
 }, {});

用它来获取所有产品

for (var key of Object.keys(tierprice)) {   
    item = {}
    item ["product_name_en"] = key;
    tierproducts.push(item);
}

console.log(tierproducts);

演出：

[ { product_name_en: "product 1" },
  { product_name_en: "product 2" },
  { product_name_en: "product 3" } ]

我正在寻找的是：

[ { product_name_en: "product 1", product_id: "1" },
  { product_name_en: "product 2", product_id: "2" },
  { product_name_en: "product 3", product_id: "3"} ]

【问题讨论】：

There's no such thing as a "JSON Object"

标签： javascript jquery json object

【解决方案1】：

您可以构建一个包含product_name_en 和product_id 的键用于分组，然后在构建最终结果集时拆分该键，例如：

let key = `${current.product_name_en}_${current.product_id}`

和：

let [product_name_en, product_id] = key.split('_');

var data = {
    "status": 1,
    "data": {
        "tierpricing": [{
            "product_id": "1",
            "product_name_en": "product 1"
        }, {
            "product_id": "1",
            "product_name_en": "product 1"
        }, {
            "product_id": "1",
            "product_name_en": "product 1"
        }, {
            "product_id": "1",
            "product_name_en": "product 1"
        }, {
            "product_id": "2",
            "product_name_en": "product 2"
        }, {
            "product_id": "2",
            "product_name_en": "product 2"
        }, {
            "product_id": "2",
            "product_name_en": "product 2"
        }, {
            "product_id": "3",
            "product_name_en": "product 3"
        }, {
            "product_id": "3",
            "product_name_en": "product 3"
        }, {
            "product_id": "3",
            "product_name_en": "product 3"
        }]
    }
};

var tierproducts = [];

var tierprice = data.data.tierpricing.reduce(function(result, current) {
  let key = `${current.product_name_en}_${current.product_id}`;
  result[key] = result[key] || [];
  result[key].push(current);
  return result;
}, {});

for (var key of Object.keys(tierprice)) { 
  item = {}
  let [product_name_en, product_id] = key.split('_');
  item ["product_name_en"] = product_name_en;  
  item ["product_id"] = product_id;
  tierproducts.push(item);
} 

console.log(tierproducts);

【讨论】：