Nodejs Random Number Get randomBetween(N, M)

Method Source Code

/**/*w  w  w  .  ja v  a  2 s.  c o m*/
 * Returns a random number between N and M
 */
randomBetween = function(N, M) {
   return Math.floor(M + (1 + N - M) * Math.random());
};

Related

1. random(_minNum,_maxNum,_rejArr)

    function random(_minNum,_maxNum,_rejArr){
        var minNum=_minNum||4,
            maxNum=_maxNum||17,
            rejArr=_rejArr||[],
            num=-1,
            flag=true;
        num = Math.floor(Math.random()*(maxNum-minNum+1)+minNum);
        if(rejArr.length>maxNum-minNum) return -1;
        for(var i=0,len=rejArr.length;i<len;i++){
   ...
   

2. random(low, high)

   function random(low, high) {
     var rand = (Math.random() * high) + low;
     return rand;
   

3. random(min, max)

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

4. random(min, max)

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

5. random(min, max)

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

6. randomBetween(min, max)

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

7. 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; 
   ...
   

8. GetRandomNum(Min, Max)

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

9. getRandomArbitrary(min, max)

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