[Solved] javascript delete elements from array of objects that are not present in another array of objects

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You can use map to walk arr2 and use find to get the matching element.

Try it online!

const arr1 = [{Id: 1, Name:'test'}, {Id: 2, Name:'test2'}]
const arr2 = [{value:'test'}, {value:'test3'}]

const newArray = arr2.map(x => {
    // we search for the matching element.
    const item = arr1.find(obj => obj.Name === x.value)
    // if item exists get item, else create a new one
    return item ? item : { Id: null, Name: x.value }
});
console.log(JSON.stringify(newArray))

output

[{"Id":1,"Name":"test"},{"Id":null,"Name":"test3"}]

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solved javascript delete elements from array of objects that are not present in another array of objects