Javascript-basics-6

1-Calculate the Square of a Number. 2-Calculate Square-root of a Number. 3-copy-all-elements-from-an-array-to-another-array. 4-maximum-and-minimum-between-two-numbers-using-functions, if you have not been proficient so you can do it simply in your own way. 5-count-total-number-of-negative-elements-in-an-array 6-sum of all even numbers between 1 to n, n is taken from the user. 7-count total number of duplicate elements in an array.