对数组对象的所有值求和，如果查询数相同则合并对象

【问题标题】：Sum all values of array objects and merge the objects if inquiry number is same对数组对象的所有值求和，如果查询数相同则合并对象
【发布时间】：2018-08-17 22:23:58
【问题描述】：

我有一个对象，里面是对象数组，我想合并具有相同InquiryNo 的对象，在里面我想添加Quantity（首先将其转换为整数然后添加）并连接@987654323 @ 与', '。我试过这样做，但我得到了错误的总和和一些错误的ProductDesc 值。这是我到目前为止所做的：

for (var i = 0; i < obj.data.length; i++) {
    obj.data[i].Quantity = parseInt(obj.data[i].Quantity);
}

console.log(typeof(obj.data[0].Quantity));

var data = obj.data, result = data.reduce(function (hash) {
    return function (r, a) {
        var key = a.InquiryNo;
        if (!hash[key]) {
            hash[key] = {
                ColorCode: a.ColorCode,
                CustCode: a.CustCode,
                CustomerName: a.CustomerName,
                InquireDate: a.InquireDate,
                InquiryNo: a.InquiryNo,
                LeadTime: a.LeadTime,
                PatternCode: a.PatternCode,
                Post: a.Post,
                PostStatus: a.PostStatus,
                ProductDesc: a.ProductDesc,
                QualityCode: a.QualityCode,
                Quantity: a.Quantity,
                ShipDate: a.ShipDate,
                StyleCode: a.StyleCode,
                Unit: a.Unit
            };
            r.push(hash[key]);
            console.log(hash[key]);
        }
        hash[key].Quantity += a.Quantity;
        return r;
    };
}(Object.create(null)), []);

console.log(result[0].Quantity);

这就是我要与之抗争的对象：

var obj = {
    meta: {
        page: "1",
        pages: "1",
        perpage: "-1",
        total: 114,
        sort: "asc",
        field: "InquiryNo"
    },
    data: [
        {
            InquiryNo: 38090,
            Quantity: "27000",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "2/6/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Hand Towel"
        },
        {
            InquiryNo: 38090,
            Quantity: "27000",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "2/6/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Bath Towel"
        },
        {
            InquiryNo: 38090,
            Quantity: "27000",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "2/6/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Wash Cloth"
        },
        {
            InquiryNo: 38090,
            Quantity: "27000",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "2/6/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Bath Sheett5"
        },
        {
            InquiryNo: 38090,
            Quantity: "27000",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "2/6/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Non Terry Kitchen Towel"
        },
        {
            InquiryNo: 38090,
            Quantity: "27000",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "2/6/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Window Pane Solid KT"
        },
        {
            InquiryNo: 38303,
            Quantity: "10",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "8/1/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Hand Towel"
        },
        {
            InquiryNo: 38303,
            Quantity: "10",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "8/1/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Bath Towel"
        },
        {
            InquiryNo: 38303,
            Quantity: "10",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "8/1/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Wash Cloth"
        },
        {
            InquiryNo: 38303,
            Quantity: "10",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "8/1/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Bath Sheett5"
        },
        {
            InquiryNo: 38303,
            Quantity: "10",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "8/1/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Non Terry Kitchen Towel"
        },
        {
            InquiryNo: 38303,
            Quantity: "10",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "8/1/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Window Pane Solid KT"
        },
        {
            InquiryNo: 38304,
            Quantity: "10",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "8/1/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Hand Towel"
        },
        {
            InquiryNo: 38304,
            Quantity: "10",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "8/1/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Bath Towel"
        },
        {
            InquiryNo: 38304,
            Quantity: "10",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "8/1/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Wash Cloth"
        },
        {
            InquiryNo: 38304,
            Quantity: "10",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "8/1/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Bath Sheett5"
        },
        {
            InquiryNo: 38304,
            Quantity: "10",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "8/1/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Non Terry Kitchen Towel"
        },
        {
            InquiryNo: 38304,
            Quantity: "10",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "8/1/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Window Pane Solid KT"
        },
        {
            InquiryNo: 38305,
            Quantity: "10",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "8/1/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Hand Towel"
        },
        {
            InquiryNo: 38305,
            Quantity: "10",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "8/1/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Bath Towel"
        },
        {
            InquiryNo: 38305,
            Quantity: "10",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "8/1/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Wash Cloth"
        },
        {
            InquiryNo: 38305,
            Quantity: "10",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "8/1/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Bath Sheett5"
        },
        {
            InquiryNo: 38305,
            Quantity: "10",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "8/1/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Non Terry Kitchen Towel"
        },
        {
            InquiryNo: 38305,
            Quantity: "10",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "8/1/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Window Pane Solid KT"
        },
        {
            InquiryNo: 38309,
            Quantity: "50000",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 27,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "11/27/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Hand Towel"
        },
        {
            InquiryNo: 38309,
            Quantity: "50000",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 27,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "11/27/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Bath Towel"
        },
        {
            InquiryNo: 38309,
            Quantity: "50000",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 27,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "11/27/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Wash Cloth"
        },
        {
            InquiryNo: 38309,
            Quantity: "50000",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 27,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "11/27/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Bath Sheett5"
        },
        {
            InquiryNo: 38309,
            Quantity: "50000",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 27,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "11/27/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Non Terry Kitchen Towel"
        },
        {
            InquiryNo: 38309,
            Quantity: "50000",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 27,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "11/27/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Window Pane Solid KT"
        },
        {
            InquiryNo: 38312,
            Quantity: "1260",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "12/9/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Hand Towel"
        },
        {
            InquiryNo: 38312,
            Quantity: "1260",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "12/9/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Hand Towel"
        },
        {
            InquiryNo: 38312,
            Quantity: "1260",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "12/9/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Hand Towel"
        },
        {
            InquiryNo: 38312,
            Quantity: "1260",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "12/9/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Hand Towel"
        },
        {
            InquiryNo: 38312,
            Quantity: "473",
            QualityCode: null,
            ColorCode: null,
            PatternCode: null,
            StyleCode: null,
            Post: "U",
            PostStatus: null,
            CustCode: 0,
            Unit: 1,
            CustomerName: "WAL-MART STORES INC.",
            InquireDate: "12/9/2017",
            LeadTime: null,
            ShipDate: null,
            ProductDesc: "Terry Hand Towel"
        }
    ]
};

如果我需要解释其他内容，请告诉我，提前谢谢。

【问题讨论】：

  • 为什么-1 在i &lt; obj.data.length - 1 中？你想故意省略最后一个元素吗？
  • @connexo 不，我正在检查黑白中的某些内容，这是一个错字...感谢您告诉我。我再次编辑了问题

标签： javascript arrays typescript ecmascript-6 javascript-objects


【解决方案1】：

这就是我能做到的：

let result = [];

obj.data.forEach(function(obj) {
    let id = obj.InquiryNo;
    // converting quantity type from string to integer
    obj.Quantity = parseInt(obj.Quantity);
    if(!this[id]) {
        result.push(this[id] = obj);
    } else {
        this[id].Quantity += parseInt(obj.Quantity);
        this[id].InquireDate += `, ${obj.InquireDate}`;
        this[id].ProductDesc += `, ${obj.ProductDesc}`;
    }
}, Object.create(null));

console.log(result);

【讨论】：

    【解决方案2】：

    我自己可能会使用 for 循环和一些 lodash 实用程序来执行此操作，但您的代码中的一个问题是您总是添加 a.Quantity，即使是新添加的 key。使用else 子句应该可以解决这个问题。

                ..
            console.log(hash[key]);
        } else {
          hash[key].Quantity += a.Quantity;
          // code for ProductDesc 
        }
        return r;
        ..

    【讨论】：

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