probability in javascript help?

Question

Sorry, I\'m new to JS and can\'t seem to figure this out: how would I do probability?

I have absolutely no idea, but I\'d like to do something: out of 100% chance, m

Answer 1

Something like this should help:

var threshhold1 = 30.5;
var threshhold2 = 70.5;
var randomNumber = random() * 100;
if (randomNumber < threshhold1) {
   func1()
}
else if (randomNumber < threshhold2) {
   func2()
}
else {
   func3()
}

This will execute func1() with 30.5% probability, func2() with 40%, and func3() with 29.5%.

You could probably do it more elegantly using a dictionary of threshholds to function pointers, and a loop that finds the first dictionary entry with a threshhold greater than randomNumber.