Faster Algorithm for JavaScript function call within a function

Question

I have written a function and called another function inside but my tests show that it is not time optimized. How can I make the following code faster?

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Answer 1

1) You can define the function sumAll outside of the function maxSum because every time you call maxSum the javascript engine is recreating a fresh new function sumAll.

2) You can define myrange[1] as a variable in the initialiser part to avoid javascript to look for myrange[1] at each iteration.

            for (var i = myrange[0]; i <= myrange[1]; i++) {

                total += array1[i];
            }

become this:

            for (var i = myrange[0], len = myrange[1]; i <= len; i++) {

                total += array1[i];
            }