1// compare two arrays where order might differ
2const array1 = [1,2,3,4,5];
3const array2 = [3,4,1,2,5];
4
5const compareArrays = (array1, array2) => {
6  return (
7    array1.length === array2.length && 
8    array1.every((el) => array2.includes(el));
9  );
10};
11
12compareArrays(array1, array2); // true
13

1Array.prototype.equals = function(arr2) {
2  return (
3    this.length === arr2.length &&
4    this.every((value, index) => value === arr2[index])
5  );
6};
7
8[1, 2, 3].equals([1, 2, 3]);	// true
9[1, 2, 3].equals([3, 6, 4, 2]);	// false

1// To compare arrays (or any other object):
2// Simple Array Example:
3const array1 = ['potato', 'banana', 'soup']
4const array2 = ['potato', 'orange', 'soup']
5
6array1 === array2;
7// Returns false due to referential equality
8JSON.stringify(array1) === JSON.stringify(array2);
9// Returns true 
10
11
12// Another Example:
13const deepArray1 = [{test: 'dummy'}, [['woo', 'ya'], 'weird']]
14const deepArray2 = [{test: 'dummy'}, [['woo', 'ya'], 'weird']]
15
16deepArray1 === deepArray2;
17// Returns false due to referential equality
18JSON.stringify(deepArray1) === JSON.stringify(deepArray2);
19// Returns true
20
21

1function arraysAreIdentical(arr1, arr2){
2    if (arr1.length !== arr2.length) return false;
3    for (var i = 0, len = arr1.length; i < len; i++){
4        if (arr1[i] !== arr2[i]){
5            return false;
6        }
7    }
8    return true; 
9}

1const arr1 = [1, 2, 3];
2const arr2 = [1, 3, 3];
3
4if (arr1.length !== arr2.length) return console.log("false");
5for (let i = 0; i < arr1.length; i++) {
6    for (let j = 0; j < arr2.length; j++) {
7        if (arr1[i] === arr2[j]) {
8            console.log("yes match", arr1[i], arr2[j]);
9            continue;
10        }
11        console.log("no match", arr1[i], arr2[j]);
12    }
13}

1var array1 = [4,8,9,10];
2var array2 = [4,8,9,10];
3