Exercise – Fibonacci sequence

For this exercise, construct a function to take a number. The end result should be the sum of numbers in the Fibonacci sequence (https://en.wikipedia.org/wiki/Fibonacci_number) up to the specified number you entered. The first few numbers of the sequence are [1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89]. Each number is the sum of the previous two numbers; for example, f[6] = 13 because f[5] = 8 and f[4] = 5, and thus f[6] = 8+5 = 13. You can use the starter code at https://github.com/PacktPublishing/Hands-on-JavaScript-for-Python-Developers/tree/master/chapter-5/fibonacci/starter-code. Don't worry too much about the most efficient algorithms for calculating the number; just be sure not to hardcode values and instead rely on the input variables and the formula.