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Javascript filter object by object with mutation
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const a = [ | |
{id: 1}, | |
{id: 4}, | |
{id: 8}, | |
{id: 6}, | |
]; | |
const b = [ | |
{id: 1, op: 'foo'}, | |
{id: 2, op: 'abc'}, | |
{id: 3, op: 'def'}, | |
{id: 4, op: 'ghi'}, | |
{id: 5, op: 'jkl'}, | |
{id: 6, op: 'mno'}, | |
{id: 7, op: 'pqr'}, | |
] | |
const res = a.reduce((accumulator, objA) => { | |
const foundObj = b.find(objB => objB.id === objA.id) | |
return foundObj === undefined ? accumulator : [...accumulator, {...objA, raqi: `${foundObj.op} :)`}]; | |
}, []); | |
console.log(res); | |
/* | |
[ | |
{ id: 1, raqi: 'foo :)' }, | |
{ id: 4, raqi: 'ghi :)' }, | |
{ id: 6, raqi: 'mno :)' } | |
] | |
*/ |
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