Taxi Fare - basic functions in JavaScript

gistfile1.js

// solution to Codeacademy.com project, "Taxi Fare"

// fare based upon miles traveled and the hour of the day
var taxiFare = function (milesTraveled, pickupTime) {
  var baseFare = 2.50;
  var costPerMile = 2.00;
  var nightSurcharge = 0.50; // 8pm to 6am, every night

  var cost = baseFare + (costPerMile * milesTraveled);
  
  // add the nightSurcharge from 8pm to 6am

  if (pickupTime >= 20 || pickupTime < 6) {
      cost += nightSurcharge;
  }
  
  return cost;
};