Nodejs Array Unique Check isUnique()

Method Source Code

"use strict";// w  ww  . jav a  2s  .c  o  m
  
Array.prototype.isUnique = function(){
    var that = this;
    var result = true;
    for (var i = 0; i < that.length; i++){
        for (var j = i+1; j < that.length; j++){
            if(that[i] === that[j]){
                result = false;
            }
        }
    }
    return result;
};

Related

1. isUnique(obj)

   function rand(min, max){
       min = min || 0;
       max = max || 1;
       return Math.random() * (max - min) + min;
   };
   exports.randInt = function(min, max){
       return Math.floor( rand( min, max ) );
   };
   Array.prototype.isUnique = function(obj){
   ...
   

2. isUnique(value)

   Array.prototype.isUnique = function(value){
     var idx = this.indexOf(value);
     return this.indexOf(value, idx + 1) == -1;
   };