verbetering van exercise

exercise_1.js

@@ -1,22 +1,24 @@
-let Name = "Determination";
+'use strict'
+let ShuttleName = "Determination";
 let ShuttleSpeed = 17500;
-let DistanceMars = 225000000;
-let DistanceMoon = 384400;
-let MilesPerKM = 0.621;
+const DISTANCE_MARS = 225000000;
+const DISTANCE_MOON = 384400;
+const MILES_PER_KM = 0.621;
+const HOURS_PER_DAY = 24;
 
-typeof Name;
-typeof ShuttleSpeed;
-typeof DistanceMars;
-typeof DistanceMoon;
-typeof MilesPerKM;
+console.log(typeof ShuttleName);
+console.log(typeof ShuttleSpeed);
+console.log(typeof DISTANCE_MARS);
+console.log(typeof DISTANCE_MOON);
+console.log(typeof MILES_PER_KM);
 
-let MilesToMars = DistanceMars * MilesPerKM;
+let MilesToMars = DISTANCE_MARS * MILES_PER_KM;
 let HoursToMars = MilesToMars / ShuttleSpeed;
-let DaysToMars = HoursToMars / 24;
+let DaysToMars = HoursToMars / HOURS_PER_DAY;
 
-let MilesToMoon = DistanceMoon * MilesPerKM;
+let MilesToMoon = DISTANCE_MOON * MILES_PER_KM;
 let HoursToMoon = MilesToMoon / ShuttleSpeed;
-let DaysToMoon = HoursToMoon / 24;
+let DaysToMoon = HoursToMoon / HOURS_PER_DAY;
 
-console.log(Name + " will take " + DaysToMars + "days to reach Mars.");
-console.log(Name + " will take " + DaysToMoon + "days to reach the Moon.");
+console.log(ShuttleName + " will take " + DaysToMars + "days to reach Mars.");
+console.log(ShuttleName + " will take " + DaysToMoon + "days to reach the Moon.");