how to access the array elements in JS [[5],[1,9],[1,5,9][1,3,7,9],[1,3,5,7,9],[1,3,4,6,7,9]] code example

Example: 14. Write a JavaScript function to find the difference of two arrays. Test Data : console.log(difference([1, 2, 3], [100, 2, 1, 10])); ["3", "10", "100"]

_.difference([1, 2, 3, 4, 5], [5, 2, 10]);
=> [1, 3, 4]