Find the minimum number in an array. #JavaScript

arrayMinimum.js

function arrayMinimum(inputArray) {

  var indexOfMinimum = 0;
  for (var i = 1; i < inputArray.length; i++) {
    if (inputArray[i] < inputArray[indexOfMinimum]) {
      indexOfMinimum = i;
    }
  }
  return  inputArray[indexOfMinimum] ;
}