javascript - 如何在 JavaScript 中展平嵌套数组？

Question

我有带有嵌套数组的复杂数组。例如，如果我想从最后一个数组获取数据，那么我必须编写: partners[0].products[0].campaigns[0].nameCampaign或.type或.price等等

我想展平这个数组。这就是我所期望的:

这可能吗？

<小时/>

@编辑这是 console.log(JSON.stringify(partners, 0, 4)); 的一部分:

[{
    "_id": "57727902d0a069e41a34eece",
    "namePartner": "Self",
    "products": [{
        "_id": "57727910d0a069e41a34eed0",
        "nameProduct": "Singl",
        "campaigns": [{
            "_id": "57727937d0a069e41a34eed1",
            "type": "lead",
            "nameCampaign": "Camp 0"
        }]
    }, {
        "_id": "5774cb68c594b22815643b37",
        "nameProduct": "DrugiPartner"
        "campaigns": [{
            "_id": "5774cb78c594b22815643b38",
            "type": "subscription",
            "nameCampaign": "DrugaKampania"
        }, {
            "_id": "5774cbedc594b22815643b3a",
            "type": "subscription",
            "nameCampaign": "TrzeciaKampania"
        }, {
            "_id": "5774cbf9c594b22815643b3b",
            "type": "subscription",
            "nameCampaign": "CzwartaKampania"
        }]
    }, {
        "_id": "5774cbdbc594b22815643b39",
        "nameProduct": "Trzeci"
        "campaigns": []
    }]
}]

Answer 1

在普通的 Javascript 中，您可以使用包含对所需项目和数组的引用的数组，并使用迭代递归方法来获取所需数组。

编辑

要添加多个属性，您可以对多个项目使用数组。

一个属性:

{ use: 'namePartner' }

多个属性:

{ use: ['nameCampains', 'type'] }

function iter(a, r, l) {
    if (Array.isArray(a)) {
        a.forEach(function (b) {
            var use = level[l].use,
                rr = JSON.parse(JSON.stringify(r));
            (Array.isArray(use) && use || [use]).forEach(function (c) {
                rr[c] = b[c];
            });
            iter(b[level[l].array], rr, l + 1);
        });
        return;
    }
    result.push(r);
}

var partners = [{ namePartner: 'Tesco', products: [{ nameProduct: 'New', campains: [{ nameCampains: 'Apple', type: 'appleType' }, { nameCampains: 'Lenovo', type: 'lenovoType' }] }] }, { namePartner: 'Eko', products: [{ nameProduct: 'Fresh', campains: [{ nameCampains: 'Asus', type: 'asusType' }, { nameCampains: 'Dell', type: 'dellType' }] }, { nameProduct: 'new', campains: [{ nameCampains: 'Samsung', type: 'samsungType' }] }] }],
    level = [{ use: 'namePartner', array: 'products' }, { use: 'nameProduct', array: 'campains' }, { use: ['nameCampains', 'type'] }],
    result = [];

iter(partners, {}, 0);
console.log(result);