Как получить разницу двух массивов на javascript?

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const array1 = [1, 2, 3, 4, 5];
const array2 = [2, 4, 6];
const diff1 = array1.filter(x => !array2.includes(x));
const diff2 = array2.filter(x => !array1.includes(x));
console.log(diff1); // [1, 3, 5]
console.log(diff2); // [6]

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const array1 = [1, 2, 3, 4, 5];
const array2 = [2, 4, 6];
const set1 = new Set(array1);
const set2 = new Set(array2);
const diff1 = [...set1].filter(x => !set2.has(x));
const diff2 = [...set2].filter(x => !set1.has(x));
console.log(diff1); // [1, 3, 5]
console.log(diff2); // [6]

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const array1 = [1, 2, 3, 4, 5];
const array2 = [2, 4, 6];
const diff = array1.filter(x => !array2.includes(x))
                 .concat(array2.filter(x => !array1.includes(x)));
console.log(diff); // [1, 3, 5, 6]