Given an array [1, 2, 3, 4], how can I find the sum of its elements? (In this case, the sum would be 10.)
[1, 2, 3, 4]
10
I thought $.each might be useful,
Those are really great answers, but just in case if the numbers are in sequence like in the question ( 1,2,3,4) you can easily do that by applying the formula (n*(n+1))/2 where n is the last number