maximum element within a specific range in an array code example

Example 1: Obtain smallest value from array of objects in Javascript

myArray.sort(function (a, b) {
    return a.Cost - b.Cost
})

var min = myArray[0],
    max = myArray[myArray.length - 1]

Example 2: loop through list, find specific number and output element's index

loop through list, find specific number and output element's index
numbers = [1,5,7,8,2,34,5,23,145,87]
N = 3
if N in numbers:
  print(numbers.index(N))
elif N not in numbers:
  print(-1)