Question

How to get the difference between two arrays in Node.js

Answer 1

function difference(arr1, arr2) {
    return arr1.filter(n => !arr2.includes(n))
               .concat(arr2.filter(n => !arr1.includes(n)));
}
 
const arr1 = [1,9,3,4,5];
const arr2 = [1,3,4,5,7];
 
console.log(difference(arr1, arr2)); 
 
 
 
 
 
/*
run:
 
[ 9, 7 ]
 
*/

 

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