How to quickly compare 2 numeric arrays?

Question

JavaScript

Is it possible to somehow quickly compare numeric arrays:

arr1 = [1,2,3];
arr2 = [1,2,3];
arr3 = [3,2,1];

Type design:

if(arr1 == arr2 || arr1 == arr3){
 alert('correct');
}
else{alert('not right');}

For some reason it doesn't work. What's wrong?

Answer 1

the == operator does not compare arrays element by element, it compares references, and they are obviously different. The most common way to compare such small arrays is to cast them to a string using JSON.stringify() and compare the strings