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Andrew Lundy
13,269 PointsThe math doesn't make sense to me.
After reading the formula, on Treehouse, MDN and FreeCodeCamp - this math doesn't make much sense.
Math.random() returns a number from 0 to 1 right? It then multiples that number by 'high minus low plus one' and then adds the low to it?
1 Answer
Balazs Peak
46,160 PointsI'd suggest to run experiments to gain more insight. I created a workspace for you on rextester: http://rextester.com/MHSTG13787
- You will find out that adding +1 makes the upper limit inclusive. If you take that away, the upper limit will never be returned (it will be an exclusive upper limit)
- Also, you'll be able to see that the operations with Math.Random only creates a range. If you take away the addition of the lower limit at the end, you'll see that the numbers will range from 0 to (upper-lower), and not from lower to upper.
It is a really good habit to quickly experiment with code any time you don't understand something! Keep coding ;)
Andrew Lundy
13,269 PointsAndrew Lundy
13,269 PointsI ended up figuring it out. Lol it was what I was thinking. I just had to process the math behind the code! Thanks man.
Balazs Peak
46,160 PointsBalazs Peak
46,160 PointsYou are most welcome!