javascript - Node Js - 展平对象数组

Question

我有一个像这样的数组

var data = [
    {
        family: "Fam A",
        category: "Cat A",
        products: [
            {
                name: "Name A1",
                style: "Style A1"
            },
            {
                name: "Name A2",
                style: "Style A2"
            }
        ]
    },
    {
        family: "Fam B",
        category: "Cat B",
        products: [
            {
                name: "Name B1",
                style: "Style B1"
            },
            {
                name: "Name B2",
                style: "Style B2"
            }
        ]
    }
]; 

我想更改内部对象，如下所示

var data = [
    {family:"Fam A", category: "Cat A", name: "Name A1", style:"Style A1"},
    {family:"Fam A", category: "Cat A", name: "Name A2", style:"Style A2"},
    {family:"Fam B", category: "Cat B", name: "Name B1", style:"Style B1"},
    {family:"Fam B", category: "Cat B", name: "Name B2", style:"Style B2"}
]  

我尝试使用在其他帖子中找到的 map 和 forEach，但没有任何效果。

var flattened = data.products.map(x => Object.assign(x, { productDetails: data.products }))

function getList(data, arrayKey, arrayName) {
    data[arrayKey].forEach(function(element) {
        element[arrayName] = data[arrayName];
    });
    return data[arrayKey];
}

理想的解决方案将能够处理动态的嵌套数量，但不需要继续。

预先感谢您帮助新开发人员!

Answer 1

你可以采取Array#flatMap使用嵌套映射。

var data = [{ family: "Fam A", category: "Cat A", products: [{ name: "Name A1", style: "Style A1" }, { name: "Name A2", style: "Style A2" }] }, { family: "Fam B", category: "Cat B", products: [{ name: "Name B1", style: "Style B1" }, { name: "Name B2", style: "Style B2" }] }],
    flat = data.flatMap(({ products, ...o }) => products.map(p => ({ ...o, ...p })));

console.log(flat);

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