Generate a random number between a min and a max. Limit the decimal places to a specific amount if you want to. Set decimal places to 0 to return a rounded int.

genRand.jsx

function genRand(min, max, decimalPlaces) {
  // you could add some error checking to make sure all arguments exist
  
  var result = Math.random() * (max - min) + min;
  if (decimalPlaces > 0) {
    var power = Math.pow(10, decimalPlaces);
    var result = Math.floor(result * power) / power;
  }
  if (decimalPlaces === 0) {
    result = Math.round(result);
  }
  return result;
}