Nodejs Array Contain contains(ele)

Method Source Code

Array.prototype.contains = function(ele)
{
    if(!ele) return false;
    var b=false;/*from w  ww  . j  av  a  2 s.  c o  m*/
    for(var i=0;i<this.length;i++){
        if(this[i]==ele){
            b=true;
        }
    }
    return b;
};

Array.prototype.uniq = function(){
    var a = [];
    this.forEach(function(b){ 
        if(a.indexOf(b) < 0)
            {a[a.length] = b}
    });
    return a;
};

Array.prototype.uniqById = function(){
    var a = [];
    var r = [];
    this.forEach(function(b){
        if(b){
            if("id" in b){
                if(a.indexOf(b.id) < 0){
                    a[a.length] = b.id;
                    r[r.length] = b;
                }
            }else if("_id" in b){
                if(a.indexOf(b._id) < 0){
                    a[a.length] = b._id;
                    r[r.length] = b;
                }
            }
        }
    });

    return r;
}

Related

1. contains(e,ignore)

   Array.prototype.contains  = function(e,ignore)  {  
     if(ignore==undefined) ignore = false;
       for(var i=0;i<this.length;i++){  
       if(ignore){
         if(this[i].toLowerCase() == e.toLowerCase()) 
           return true; 
       }else{
         if(this[i] == e) 
           return true; 
   ...
   

2. contains(el)

   "use strict";
   Array.prototype.contains = function(el){
     return this.indexOf(el) > -1;
   };
   var rotateArray = function rotateArray(arr){ 
     arr.unshift(arr.pop());
     return arr;
   };
   print(function(input){ 
   ...
   

3. contains(el)

   Array.prototype.contains = function(el) {
     for(var i = 0; i < this.length; i++) {
       if(this[i] === el) {
         return true;
     return false;
   };
   

4. contains(el, test)

   Array.prototype.contains = function(el, test) {
       if (test == null) return this.indexOf(el) >= 0;
       for (var i = this.length; --i >= 0;) if (test(this[i], el)) return true;
   };
   

5. contains(ele)

   Array.prototype.contains = function(ele) {
     for (var i = 0; i < this.length; i++) {
       if (this[i] === ele) return true;
     return false;
   };
   Array.prototype.clear = function() {
     var cnt = this.length;
     this.splice(0, cnt);
   ...
   

6. contains(elem)

   Array.prototype.contains = function(elem)
     for (var i in this)
       if (this[i] == elem) return true;
     return false;
   };
   

7. contains(elem)

   Array.prototype.contains = function(elem) {
       return this.indexOf(elem) != -1;
   

8. contains(elem)

   Array.prototype.contains = function (elem) {
     for (var i = 0; i < this.length; i++) {
       if (this[i] == elem) {
         return true;
     return false;
   

9. contains(elem)

   Array.prototype.contains = function(elem){
       for(var i = 0; i < this.length; i++) {
           if(this[i] === elem) return true;
       return false;
   };