Compare two Arrays with Objects and create new array with unmatched objects

by

You could reverse the comparison (equal instead of unqual) and return the negated result of some.

const
    array1 = [{ id: 1 }, { id: 2 }, { id: 3 }, { id: 4 }],
    array2 = [{ id: 1 }, { id: 3 }],
    array3 = array1.filter(entry1 => !array2.some(entry2 => entry1.id === entry2.id));
    //                               ^                                ^^^

console.log(array3);

More Related Contents:

  1. javascript extract certain properties from all objects in array
  2. Why are Objects not Iterable in JavaScript?
  3. Create object from array
  4. Filtering an array with a function that returns a promise
  5. How to generate range of numbers from 0 to n in ES2015 only?
  6. How to find duplicate values in a JavaScript array of objects, and output only unique values?
  7. Using Array objects as key for ES6 Map
  8. Convert ES6 Iterable to Array
  9. Get list of duplicate objects in an array of objects
  10. Extract certain properties from all objects in array
  11. spread operator vs array.concat()
  12. Unexpected comma using map()
  13. Replace element at specific position in an array without mutating it
  14. Find all values by specific key in a deep nested object
  15. How to create an array of objects from multiple arrays
  16. Array.from() vs spread syntax
  17. How to delete property from spread operator?
  18. what happens when an item is deleted from a javascript array [duplicate]
  19. Concat two arrays But concat is not working
  20. Find a value in an array of objects in Javascript [duplicate]
  21. Javascript Array.sort implementation?
  22. JavaScript – Difference between Array and Array-like object
  23. Create a and fill it based on a passed array
  24. ES6 Destructuring and Module imports
  25. Convert html table to array in javascript
  26. Group by, and sum, and generate an object for each array in JavaScript
  27. JavaScript array to CSV
  28. How to push object to array from for loop properly in JavaScript?
  29. Filter null from an array in JavaScript
  30. How does one sort a multi dimensional array by multiple columns in JavaScript?

Leave a Comment