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Accepted
Dan
Asked:2022-01-26 17:45:01 +0000 UTC2022-01-26 17:45:01 +0000 UTC

如何使用新键将数组重建为新数组？

  • 772

实现情况，有一个products（products）数组，每个item都有id、name、price等字段。如何使用 products 数组中的新键组装一个新数组。这是作为 Sberbank 在线产品列表传输所必需的，例如，如果数组具有键 [id]，则 Sberbank 必须是 [code]

javascript

2 个回答

  1. Best Answer

    您可以将 id 更改为这样的代码，而无需更改属性的顺序

    let test = [
    { id: 10, name: 1, price: 11 },
    { id: 20, name: 2, price: 22 },
    { id: 30, name: 3, price: 33 },
];

let newCollection = test.map(item => {
    let {id, ...rest} = item;    
    return {
        code: id,
        ...rest
    };
});

console.log(newCollection);

    好吧，或者这么切，同样的

    let test = [
    { id: 10, name: 1, price: 11 },
    { id: 20, name: 2, price: 22 },
    { id: 30, name: 3, price: 33 },
];

let newCollection = test.map(({id, ...rest}) => ({code: id,...rest}));

console.log(newCollection);

    • 2 

  2. let test = [
    { id: 10, name: 1, price: 11 },
    { id: 20, name: 2, price: 22 },
    { id: 30, name: 3, price: 33 },
];

let newCollection = test.map((item) => {        
    item['code'] = item.id;
    delete item.id;
    
    return item;
});

console.log(newCollection);

    let test = [
    { id: 10, name: 1, price: 11 },
    { id: 20, name: 2, price: 22 },
    { id: 30, name: 3, price: 33 },
];

let newCollection = test.map((item) => {   
    return {
        code: item.id,
        token: item.name + ' hello!',
        smile: item.price > 22
    };
});

console.log(newCollection);

    • 0

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