How recursive function works in this example

[gaac510]

I made a drawing a while ago explaining another recursion function:

Replace Loops(can't understand how recursion works

@veronika2001 For example let someArr = [5, 9, 7, 2, 3, 4]; console.log(someArr[0]); // 5 console.log(someArr[1]); // 9 console.log(someArr[2]); // 7 console.log(someArr[3]); // 2 console.log(someArr[4]); // 3 console.log(someArr[5]); // 4 If you run sum(someArr, 5) , this is how it works: (PS the function is actually multiplying not summing, so you should probably either change the function to summing or change the function name to something indicating multiplying) [visualised]