Personally, I just know the Math.random method and I already know how to generate values starting from 0 to another number by multiplication, eg Math.random () * 20.
But I'm trying to do the same thing, starting from 5 to 20, I've already swept the net and nobody explains it: /
Thank you in advance for helping me!
The Math.random () is by definition a number between 0 and 1 . What you can do is add the value you want to have the result you want. That is:
var numeroAleatorio = 5 + (Math.random() * 15);
This ensures that the lowest possible result is 5 , and the highest possible is 20 .
In other words, the 5 in this case changes the minimum that this code can give, and the 15 in this case, added with the minimum, will be the maximum that the code can give.
You can use the following functions:
Returns a random number between the min (inclusive) and max (exclusive):
function getNumeroRandom(min, max) {
return Math.random() * (max - min) + min;
}
Returns a random number between the min (inclusive) and max (inclusive):
function getRandomInt(min, max) {
return Math.floor(Math.random() * (max - min + 1)) + min;
}
obs: Using Math.round () will give you a non-uniform distribution, but with the getRandomInt () function you have a perfectly even distribution.