Nodejs Array Unique uniq()

Method Source Code

Array.prototype.uniq = function() {  
    var temp = {};

    for(var i=0; i<this.length; i++)  {  
            temp[this[i]] = 1;/*from   ww w  . j a v a  2s  .c o m*/
    }  

    this.length = 0;
    for(var e in temp) {  
        this.push(e);
    }  
    this.sort()

    return this;  
}  




function xmlencode(string) {
    return string.replace(/\&/g,'&'+'amp;').replace(/</g,'&'+'lt;')
        .replace(/>/g,'&'+'gt;').replace(/\'/g,'&'+'apos;').replace(/\"/g,'&'+'quot;');
}

Related

1. uniq()

   Array.prototype.uniq = function () {
     var occurrenceHash = {};
     var result = [];
     for (var i = 0; i < this.length; i++) {
       if (!occurrenceHash[this[i]]) {
           occurrenceHash[this[i]] = true;
           result.push(this[i]);
     return result;
   

2. uniq()

   Array.prototype.uniq = function () {
     var results = [];
     for (var i = 0; i < this.length; i++) {
       var includes = false;
       for (var j = 0; j < results.length; j++) {
         if (results[j] === this[i]) {
           includes = true;
       };
   ...
   

3. uniq()

   Array.prototype.uniq = function ()
     var dups = [];
     for (var i = 0; i < this.length; i++)
       var flag = true;
       for (var j = 0; j < dups.length; j++)
         if (this[i] === dups[j])
   ...
   

4. uniq()

   Array.prototype.uniq = function () {
       var flag = false;
       var result = [];
       for(var i=0;i<this.length;i++) {
           if(result.indexOf(this[i]) == -1) {
               if(this[i]==this[i]) {
                   result.push(this[i]);
               else if(!flag) {
   ...
   

5. uniq()

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

6. uniq()

   Array.prototype.uniq = function () {
     var uniq_arr = [];
     for (var i = 0; i < this.length; i++) {
       var included = false;
       for (var j = 0; j < uniq_arr.length; j++) {
         if (uniq_arr[j] === this[i]) {
           included = true;
           break;
         };
   ...
   

7. uniq()

   Array.prototype.uniq = function() {
     let res = [];
     for(let i=0; i < this.length; i++) {
       let value = this[i];
       if (!res.includes(value)) res.push(value);
     return res;
   };
   console.log([1,2,2,1,1,3].uniq());
   ...
   

8. uniq()

   Array.prototype.uniq = function () {
     var uniqueArray = [];
     for (var i = 0; i < this.length; i++) {
       if (uniqueArray.indexOf(this[i]) === -1) {
         uniqueArray.push(this[i]);
     return uniqueArray;
   };
   ...
   

9. uniq()

   "use strict";
   Array.prototype.uniq = function () {
     let uniqueArray = [];
     for (let i = 0; i < this.length; i++) {
       if (uniqueArray.indexOf(this[i]) === -1) {
         uniqueArray.push(this[i]);
     return uniqueArray;
   ...