[英]How do I remove properties from JavaScript object in array?
假設我有這個數組如下:
[
{
"id": 111,
"productName": "Chicken",
"variant": 9,
"variantName": "small",
"extrasSelected": [],
"price": 26,
"qty": "1"
},
{
"id": 112,
"productName": "Fish",
"variant": 25,
"variantName": "small",
"extrasSelected": [],
"price": 26,
"qty": "1"
}
]
如何刪除某些屬性,使其最終如下所示?
[
{
"id": 111,
"variant": 9,
"extrasSelected": [],
"qty": "1"
},
{
"id": 112,
"variant": 25,
"extrasSelected": [],
"qty": "1"
}
]
原因為什么我必須這樣做,因為我需要在發送newObject
數據到我finalCart
,但我需要在productName
中oldObject
並將其顯示在我的看法。
您可以使用Array.prototype.map
[
{
"id": 111,
"productName": "Chicken",
"variant": 9,
"variantName": "small",
"extrasSelected": [],
"price": 26,
"qty": "1"
},
{
"id": 112,
"productName": "Fish",
"variant": 25,
"variantName": "small",
"extrasSelected": [],
"price": 26,
"qty": "1"
}
].map(({id, variant, extrasSelected, qty}) => ({id, variant, extrasSelected, qty}))
只需在.map
進行解構
const data = [
{
"id": 111,
"productName": "Chicken",
"variant": 9,
"variantName": "small",
"extrasSelected": [],
"price": 26,
"qty": "1"
},
{
"id": 112,
"productName": "Fish",
"variant": 25,
"variantName": "small",
"extrasSelected": [],
"price": 26,
"qty": "1"
}
];
// 1
const result = data.map(({ id, variant, extrasSelected, qty }) => ({
id,
variant,
extrasSelected,
qty
}));
// Detailed explanation
// 2
// 2 is same as 1
const result2 = data.map((item => {
const { id, variant, extrasSelected, qty } = item;
return { id, variant, extrasSelected, qty };
}));
// 3
// 3 is same as 2
const result3 = data.map((item) => {
const id = item.id;
const variant = item.variant;
const extrasSelected = item.extrasSelected;
const qty = item.qty;
return {
id: id,
variant: variant,
extrasSelected: extrasSelected,
qty: qty
}
});
console.log(result);
/*
[
{ id: 111, variant: 9, extrasSelected: [], qty: '1' },
{ id: 112, variant: 25, extrasSelected: [], qty: '1' }
]
*/
有很多方法可以做到這一點。
如果您確實想delete
屬性,這是一種方法:
let array = [ { "id": 111, "productName": "Chicken", "variant": 9, "variantName": "small", "extrasSelected": [], "price": 26, "qty": "1" }, { "id": 112, "productName": "Fish", "variant": 25, "variantName": "small", "extrasSelected": [], "price": 26, "qty": "1" } ] array.forEach(obj => { delete obj.variantName; delete obj.price; delete obj.productName; }); console.log(array);
上述解決方案的變化。 使用Array.Map
和 rest 參數。
const data = [{ "id": 111, "productName": "Chicken", "variant": 9, "variantName": "small", "extrasSelected": [], "price": 26, "qty": "1" }, { "id": 112, "productName": "Fish", "variant": 25, "variantName": "small", "extrasSelected": [], "price": 26, "qty": "1" } ] const result = data.map(({ productName, variantName, ...rest }) => rest); console.log(JSON.stringify(result, null, 4));
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