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Random numbers

Math.random() returns a pseudo-random number between 0 (inclusive) and 1 (exclusive).
var x = Math.random();
x could, for example, get the value 0.6206372241429993. Each call of Math.random() generates a new random number. The numbers are equally distributed between 0 and 1. They are called pseudo-random numbers, because they look random but are still calculated. If you want to get random numbers in another range or with a different distribution, you have to transform the numbers generated by Math.random() adequately. This should be practiced now.

Exercise

Write a function dice that returns like a dice a random number between 1 and 6.