Question

How to find the uncommon elements from two arrays in JavaScript

Answer 1

const arr1 = [1, 2, 7,  5, 16, 18];
const arr2 = [1, 8, 5, 12, 19, 52, 103, 150];
 
const uncommon_arr1 = arr1.filter(function(obj) { return arr2.indexOf(obj) == -1; });
const uncommon_arr2 = arr2.filter(function(obj) { return arr1.indexOf(obj) == -1; });

const uncommon = [...uncommon_arr1, ...uncommon_arr2]
         
console.log(uncommon);
   
   
   
/*
run:
   
[
   2,  7, 16,  18,   8,
  12, 19, 52, 103, 150
]
 
*/

 

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