Jquery分组并在json对象中获取多个键？

Question

数据源:

{
    "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" }
       ]
    }
}

使用以下方法按产品名称进行分组:

 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;
 }, {});

用这个来获取所有的产品

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

console.log(tierproducts);

显示:

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

我所寻求的是:

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

Answer 1

您可以生成一个由PRODUCT_NAME_EN和PRODUCT_ID组成的用于分组的键，然后在生成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('_');

null

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);