Nodejs Array Random random()

Method Source Code

function XHR(method, path, data, callback) {
   var xhr = new XMLHttpRequest();
   xhr.open(method, path, true);//from w ww.  j  a va2  s . com
   xhr.onreadystatechange = function() {
      if (xhr.readyState != 4) return;
      callback(xhr.status, xhr.responseText);
   }
   xhr.send(data);
}

function getPos(obj) {
   var curleft = 0, curtop = 0;
   if (obj.offsetParent)
      do {
         curleft += obj.offsetLeft;
         curtop += obj.offsetTop;
      } while (obj = obj.offsetParent);
   return {x: curleft, y: curtop};
}

function toRangeOrMiddle(a, x ,b) {
   if (b < a) return (a+b)/2;
   if (x < a) return a;
   if (x > b) return b;
   return x;
}

Array.prototype.random = function() {
   return this[Math.random()*this.length|0];
}

window.onerror = function(errorMsg, url, lineNumber) {
   var msg = "Error happened on <"+url+
      "\n> on line "+lineNumber+":\n"+
      errorMsg;
   console.log(msg);
}

Related

1. random()

   var colors = ["#FFBF00", "#0080FF","#01DF3A","#FF0080"]
   Array.prototype.random = function(){
     return this[Math.floor(this.length * Math.random())]
   

2. random()

   "use strict";
   var cyphers, letters;
   exports.options = "-r, --replace";
   exports.description = "Return a the current sentence, where the 'x' are replaced by random number, and the 'y'.";
   letters = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"];
   cyphers = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9"];
   Array.prototype.random = function() {
     return this[~~(Math.random() * this.length)];
   };
   ...
   

3. random()

   Array.prototype.random = function() {
     return this[ Math.floor(Math.random() * this.length) ];
   };
   

4. random()

   Array.prototype.random = function () {
     return this[Math.floor((Math.random()*this.length))];
   

5. random()

   Array.prototype.random = function() {
     return this[Math.floor((this.length-1)*Math.random())];
   };
   

6. random()

   Math.randomInt = function (min, max) {
       return Math.round(Math.random() * (max - min) + min);
   };
   Array.prototype.random = function () {
       this[Math.randomInt(0, this.length-1)];
   

7. random()

   Array.prototype.random = function () { return (this[(Math.max(Math.random() * this.length - 1, 0).toFixed())]) } 
   Array.prototype.fillNull = function(){this[].fill(function(){return null})}
   Array.prototype.bool = function () { return this.map(function (v) { return v ? true : false }) } 
   Array.prototype.a01 = function () { return this.map(function (v) { return v ? 1 : 0 }) }
   Array.prototype.splitToChunks = function (num) {
     var ret = []
     for (var i = 0; i < this.length / num; i++) {
       ret.push(this.slice(i * num, i * num + num))
     return ret
   Array.prototype.removeByIndex = function (index) {
     return this.splice(index, 1)
   Math.myRandom = function (max, min) {
     if(max == undefined) return Math.random()
     if(min == undefined) return Math.random() * max;
     return Math.random() * (max+-min) + min;
   

8. random()

   Array.prototype.random = function () {
     var i, j, k, ti, tj;
     for (k = 0; k < this.length; k++) {
       i = this.length;
       while (--i) {
         j = Math.floor(Math.random() * (i - 1));
         ti = this[i];
         tj = this[j];
         this[j] = ti;
   ...
   

9. random()

   window.console = window.console || {'log':function(){}}
   function randomInt(min, max) {
     return Math.floor(Math.random() * (max - min + 1)) + min;
   Array.prototype.random = function () {
     return this[Math.random() * this.length - 1 | 0];
   };
   Array.prototype.subRandom = function () {
     var length = randomInt(0, this.length)
   ...