Nodejs Random Number Get getRandom(low, high)

Method Source Code

/*jshint browser:true */
/*jshint devel:true */

// modify the prototype of the Number object
Number.prototype.getRandom = function(low, high) {
    "use strict";    
    /*from w  ww  .  j a  v  a 2 s  . co  m*/
    var randomNumber;
    // hacking overloading
    if ((low === undefined) || (high === undefined)) {
        low = 1;
        high = 10;
    }
    // calculate the random number
    randomNumber = Math.round(Math.random() * (high - low)) + low;
    
    return randomNumber;
};

Related

1. randomGaussian(mean, standardDeviation)

   Math.randomGaussian = function(mean, standardDeviation) {
     if (Math.randomGaussian.nextGaussian !== undefined) {
       var nextGaussian = Math.randomGaussian.nextGaussian;
       delete Math.randomGaussian.nextGaussian;
       return (nextGaussian * standardDeviation) + mean;
     } else {
       var v1, v2, s, multiplier;
       do {
         v1 = 2 * Math.random() - 1; 
   ...
   

2. GetRandomNum(Min, Max)

   function GetRandomNum(Min, Max) {
     var Range = Max - Min;
     var Rand = Math.random();
     return (Min + Math.round(Rand * Range));
   

3. getRandomArbitrary(min, max)

   function getRandomArbitrary(min, max) {
       return Math.random() * (max - min) + min;
   

4. getRandom

   ===
   

5. getRandom(low, high)

   Number.prototype.getRandom = function(low, high){
     'use strict';
     var randomNumber;
     if((low === undefined) || (high === undefined)){
       low = 1;
       high = 10;
     randomNumber = Math.round(Math.random() * (high - low)) + low;
     return randomNumber;
   ...
   

6. getRandomInterval(min, max)

   Random.getRandomInterval(min, max){
       return Math.random() * (max - min) + min;
   

7. getRandomNumber(min, max)

   var getRandomNumber = function (min, max){
     return Math.floor(Math.random() * max + min);
   

8. getRandomNumberBinary()

   var getRandomNumberBinary = function() {
     var randomNumber = getRandomNumber(0, 15);
     var returnObject = { decimal: randomNumber, binario: pad(dec2bin(randomNumber), 4)}
     return returnObject;
   var getRandomNumber = function (min, max){
     return Math.floor(Math.random() * max + min);
   

9. randomMax()

   Number.prototype.randomMax = function() {
       return Math.floor(Math.random() * (this.valueOf() + 1));