Question

Maybe trivial but what is an elegant way of dividing elements in one array by another (assume arrays are of equal length)? For instance

var A = [2,6,12,18]
var B = [2,3,4,6]

Dividing should give me: [1,2,3,3]

Answer 1

If you have ES5 support, this may be a good option:

var result = A.map(function(n, i) { return n / B[i]; });

Where n in callback represents the iterated number in A and i is the index of n in A.