Mithun S:
私は、オブジェクトの配列を持っています。各オブジェクトは、別の内側の配列が含まれています。私は外側のオブジェクトとして各内側の配列を取得し、新しく作成された外部オブジェクトのサブプロパティとして残っている古い外の要素を入れたいと思います。
入力
data = [
{
name: "Sam",
ssn: 123,
age: 25,
hobbies: [{ name: "cricket" }, { name: "football" }]
},
{
name: "John",
ssn: 234,
age: 25,
hobbies: [{ name: "cricket" }, { name: "football" }]
},
{
name: "Mathew",
ssn: 345,
age: 25,
hobbies: [{ name: "cricket" }, { name: "football" }, {name: "carroms"}]
}
];
予想される出力
[
{
name: "cricket",
person_details: [
{ name: "Sam", ssn: 123, age: 25 },
{ name: "John", ssn: 234, age: 25 },
{ name: "Mathew", ssn: 345, age: 25 }
]
},
{
name: "football",
person_details: [
{ name: "Sam", ssn: 123, age: 25 },
{ name: "John", ssn: 234, age: 25 },
{ name: "Mathew", ssn: 345, age: 25 }
]
},
{
name: "carroms",
person_details: [
{ name: "Mathew", ssn: 345, age: 25 }
]
}
]
私は次のように削減使用して試してみました
this.data = this.data.reduce(
(a, x) => [...x.hobbies.map(h => ({ ...x, hobbies: [h] }))],
[]
);
ニーナショルツ:
あなたは、結果セットに同じ名前の項目の配列および外観を低下させる可能性があります。
var data = [{ name: "Sam", ssn: 123, age: 25, hobbies: [{ name: "cricket" }, { name: "football" }] }, { name: "John", ssn: 234, age: 25, hobbies: [{ name: "cricket" }, { name: "football" }] }, { name: "Mathew", ssn: 345, age: 25, hobbies: [{ name: "cricket" }, { name: "football" }, { name: "carroms" }] }],
result = data.reduce((r, { hobbies, ...o }) => {
hobbies.forEach(({ name }) => {
var group = r.find(q => q.name === name);
if (!group) r.push(group = { name, person_details: [] });
group.person_details.push(o);
})
return r;
}, []);
console.log(result);
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