Nodejs Array Unique unique()

Method Source Code

/* Function for removing array duplicates - http://www.martienus.com/code/javascript-remove-duplicates-from-array.html */
Array.prototype.unique = function () {
   var r = new Array();
   o:for(var i = 0, n = this.length; i < n; i++)
   {/*from www  .  j  a v  a2  s.co m*/
      for(var x = 0, y = r.length; x < y; x++)
      {
         if(r[x]==this[i])
         {
            continue o;
         }
      }
      r[r.length] = this[i];
   }
   return r;
}

Related

1. unique()

   'use strict';
   Array.prototype.unique = function() {
     var newArray = [];
     for (var i = 0, l = this.length; i < l; i++) {
       if (newArray.indexOf(this[i]) === -1 && this[i] !== '') {
         newArray.push(this[i]);
     return newArray;
   ...
   

2. unique()

   Array.prototype.unique = function() {
     var a = [];
     var l = this.length;
     for ( var i = 0; i < l; i++) {
       for ( var j = i + 1; j < l; j++) {
         if (this[i] === this[j])
           j = ++i;
       a.push(this[i]);
   ...
   

3. unique()

   var fs = require('fs');
   Array.prototype.unique = function() {
     var res = [],
       hash = {};
     for (var i = 0, elem;
       (elem = this[i]) != null; i++) {
       if (!hash[elem]) {
         res.push(elem);
         hash[elem] = true;
   ...
   

4. unique()

   Array.prototype.unique = function() {
     var seen = {}
     return this.filter(function(x) {
       if (seen[x])
         return
       seen[x] = true
       return x
     })
   

5. unique()

   Array.prototype.unique = function() {
     var array = [];
     var l = this.length;
     for(var i=0; i<l; i++) {
       for(var j=i+1; j<l; j++) {
         if (this[i] === this[j]) j = ++i;
       array.push(this[i]);
     return(array);
   };
   

6. unique()

   Array.prototype.unique = function() {
       return this.reduce(function(p, c) { 
                       if (p.indexOf(c) < 0) p.push(c);
                       return p;
                   }, []);
   

7. unique()

   function stringToBoolean(string) {
     switch(string.toLowerCase()) {
       case "true": case "yes": case "1": return true;
       case "false": case "no": case "0": case null: return false;
       default: return string;
   Array.prototype.unique = function() {
       var o = {},
   ...
   

8. unique()

   Array.prototype.unique = function() {
     var a=[];
     for (var b = 0; b < this.length; b++) {
       if(a.indexOf(this[b]) == -1) {
         a.push(this[b])
     return a
   

9. unique()

   Array.prototype.unique = function() {
     var arr = [];
     for (var i = 0; i < this.length; i++) {
       if (!arr.contains(this[i])) {
         arr.push(this[i]);
     return arr;
   function lowestUnique(str) {
     var arr = str.split(" ");
     var length = arr.length;
     var mapObj = {};
     var uniqueArr = arr.unique();
     for (var i = 0; i < length; i++) {
       mapObj[arr[i]] = 1 + (mapObj[arr[i]] || 0);
     var lowestNum = 100000000000;
     for (var n = 0; n < uniqueArr.length; n++) {
       if (mapObj[uniqueArr[n]] == 1) {
         if (lowestNum > uniqueArr[n]) {
           lowestNum = uniqueArr[n];
     if (lowestNum === 100000000000) {
       console.log(0);
     } else {
       arr.filter(function(e, ind, array) {
         if (e == lowestNum) {
           console.log(ind + 1);
       });