I have two arrays of objects that I need to combine where the nested ID (connect.id) of the second array matches the id of the first but can't see how to do it
can anyone help?
const arr1 = [
{ "id": 7619209572755, "title": "Title 1" },
{ "id": 7619209157372, "title": "Title 2" },
{ "id": 7619209921625, "title": "Title 3" }
];
const arr2 = [
{
"id": 7619217289192,
"connect": [
{ "id": 7619209157372, "title": "Title 1" }
],
"value": "1"
},
{
"id": 7619217242206,
"connect": [
{ "id": 7619209921625, "title": "Title 2" }
],
"value": "2"
}
];
const expectedResult = [
{ "id": 7619209572755, "title": "Title 1" },
{ "id": 7619209157372, "title": "Title 2", "value": "1" },
{ "id": 7619209921625, "title": "Title 3", "value": "2" }
]
Array#reduce, iterate over arr2 to map every connect element's id with the its object's value in a MapArray#map, iterate over arr1, if an element's id is in the map, set its valueconst
arr1 = [ { "id": 7619209572755, "title": "Title 1" }, { "id": 7619209157372, "title": "Title 2" }, { "id": 7619209921625, "title": "Title 3" } ],
arr2 = [
{
"id": 7619217289192,
"connect": [ { "id": 7619209157372, "title": "Title 1" } ],
"value": "1",
},
{
"id": 7619217242206,
"connect": [ { "id": 7619209921625, "title": "Title 2" } ],
"value": "2",
}
];
const connectValueMap = arr2.reduce((map, { connect = [], value}) => {
connect.forEach(({ id }) => map.set(id, value));
return map;
}, new Map);
const merged = arr1.map(e => {
const value = connectValueMap.get(e.id);
if(value) e.value = value;
return e;
});
console.log(merged);