javascript built in random methods code example

Example 1: javascript get random number in range

function getRandomNumberBetween(min,max){
    return Math.floor(Math.random()*(max-min+1)+min);
}

//usage example: getRandomNumberBetween(20,400);

Example 2: javascript pseudo random

var seed = 0;
var modulus = 2 ** 32;
var a = 1664525;
var c = 1013904223;

function getRandom() {
  var returnVal = seed / modulus;
  seed = (a * seed + c) % modulus;
  return returnVal;
}