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[英]How can I perform an inner join with two object arrays in JavaScript?
[英]How can I inner join with two object arrays in JavaScript?
我需要像這樣在 javascript 中與兩個數組進行內部連接:
array1 =
[
{
"id": 1,
"name": "Tufan"
},
{
"id": 2,
"name": "Batuhan"
},
{
"id": 3,
"name": "Hasan"
}
]
array2 =
[
{
"name": "yyy",
"externalid": "1",
"value": "Asd"
},
{
"name": "aaaa"
"externalid": "2",
"value": "ttt"
}
]
expectedArray =
[
{
"id": 1,
"name": "Tufan",
"externalid": "1",
"value": "Asd"
},
{
"id": 2,
"name": "Batuhan",
"externalid": "2",
"value": "ttt"
}
]
規則:
我的方法:
array1.filter(e => array2.some(f => f.externalid == e.id));
// I need help for continue
我該怎么做?
無所謂信息:我用ES5和純javascript
你可以這樣做:
const res = array2.map((item) => {
const related = array1.find((el) => el.id == item.externalid);
return { ...item, ...related };
});
使用 map 遍歷 array2 並使用 find 獲取 array1 相對值。
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