JavaScript Arrays and Array Methods - Learn JavaScript Basics Tutorial (Part 3)

Learn all about JavaScript arrays and array methods. This video includes explanations and examples for: 1) push, 2) pop, 3) unshift and shift, 4) sort, 5) reverse, 6) forEach, 7) map, 8) filter, 9) join, 10) concat, 11) slice, and 12) splice.

[fenhirbr]

To add the numbers together you should use reduce.