Nodejs Array Contain contains(elem)

Method Source Code

Array.prototype.contains = function (elem) {
   for (var i = 0; i < this.length; i++) {
      if (this[i] == elem) {
         return true;
      }/*from  ww w .  j a  v  a 2s  .  com*/
   }
   return false;
}

Related

1. 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;
   };
   

2. 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);
   ...
   

3. contains(ele)

   Array.prototype.contains = function(ele)
       if(!ele) return false;
       var b=false;
       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;
   

4. contains(elem)

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

5. contains(elem)

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

6. contains(elem)

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

7. contains(elem)

   Array.prototype.contains = function(elem) {
     return this.indexOf(elem) >= 0
   

8. contains(element)

   Array.prototype.contains = function(element) {
     return this.indexOf(element) >= 0;  
   };
   

9. contains(element)

   Array.prototype.contains = function(element) {
       return this.lastIndexOf(element) != -1;
   };