How to check the equality of two arrays with the same object properties but different sequence

Question

I want to compare two Arrays of object and check the equality with the same properties but different sequences, for example

const array1 = [{id:1,name:'john'},{id:2,name:'wick'}];
const array2 = [{id:2,name:'wick'},{id:1,name:'john'}];

// How can I check if these arrays have the same objects

Does this answer your question? [How to know if two arrays have the same values](https://stackoverflow.com/questions/6229197/how-to-know-if-two-arrays-have-the-same-values) — Gustav Vingtoft, Nov 16 '22 at 12:53
These two answers are for non object data, I need to work with object data — Usama Abdul Razzaq, Nov 16 '22 at 12:57
@ManirajMurugan but objects are non-primitive types so, it can't be sorted and compared like numbers — Salwa A. Soliman, Nov 16 '22 at 13:09

score 2 · Accepted Answer · answered Nov 16 '22 at 13:05

const array1 = [{
  id: 1,
  name: 'john'
}, {
  id: 2,
  name: 'wick'
}];
const array2 = [{
  id: 2,
  name: 'wick'
}, {
  id: 1,
  name: 'john'
}];
const array3 = [{
  id: 2,
  name: 'abc'
}, {
  id: 1,
  name: 'john'
}];


console.log('array1 matches array2? ', isMatched(array1, array2));

console.log('array3 matches array2? ',isMatched(array3, array2));

function isMatched(arr1, arr2) {
  //sort arrays
  arr1.sort((a, b) => a.id - b.id);
  arr2.sort((a, b) => a.id - b.id);

  return arr1.every((obj, i) =>
        Object.keys(obj).length === Object.keys(arr2[i]).length &&
        Object.keys(obj).every(prop => obj[prop] === arr2[i][prop])
      )
    }

a & b refer to array elements (elements here are objects so, I try to sort them according to id property) .. same as sorting array of numbers arr.sort((a, b)=> a-b) — Salwa A. Soliman, Nov 16 '22 at 13:49

How to check the equality of two arrays with the same object properties but different sequence

1 Answers1