Sometimes, we want to compare two arrays of objects, and exclude the elements who match values into new array in JavaScript.

In this article, we’ll look at how to compare two arrays of objects, and exclude the elements who match values into new array in JavaScript.

How to compare two arrays of objects, and exclude the elements who match values into new array in JavaScript?

To compare two arrays of objects, and exclude the elements who match values into new array in JavaScript, we use the array filter and some methods.

For instance, we write

const result = result1.filter((o1) => !result2.some((o2) => o1.id === o2.id));

to call filter with a callback that calls result2.some to check if anything in result1 matches the id in any object in result2.

If that’s false, then we put the object o1 in the returned array.

Conclusion

To compare two arrays of objects, and exclude the elements who match values into new array in JavaScript, we use the array filter and some methods.