How to generate random numbers in Javascript [duplicate]

Question

Possible Duplicate:
Generating random numbers in Javascript

Hi..

I want to generate random numbers (integers) in javascript within a specified range. ie. 101-999. How can I do that. Does Math.random() function supports range parameters ?

Answer 1

The function below takes a min and max value (your range).

function randomXToY(minVal,maxVal)
{
  var randVal = minVal+(Math.random()*(maxVal-minVal));
  return Math.round(randVal);
}

Use:

var random = randomXToY(101, 999);

Hope this helps.

Answer 2

Just scale the result:

function randomInRange(from, to) {
  var r = Math.random();
  return Math.floor(r * (to - from) + from);
}

Answer 3

Math.floor(Math.random()*898)+101