How we can make a range of Math.random output numbers?

Question

Math.random gives us no. from 0 to 9 but if we want to set a range like 3 to 8. so is that any specific function which can do this?

Answer 1

That's what I already previouly done ^^

If you mean write the code who generate an array of random numbers, simply do a loop:

var count=42;
var aRand=[];
while (count--) aRand.push(Math.random());

... give you an array 'aRand' with 42 float items randomly generated; basicaly :P

Answer 2

Math.random() return a float between 0 and 1 ( 1 excluded: interval [0;1[ ), so to have a range between [0,n[ you need to:

n=5;
var num = n * Math.random(); // [0;5]

... to define the range itself, and add the wanted shift:

num += 3; // [3;8[

Answer 3

can you give an example on this?