Nodejs Array Contain contains(obj)

Method Source Code

Array.prototype.contains = function(obj){
   return (this.indexOf(obj) == -1)?false:true;
}

// fixing Array.indexOf for the fucking IE engine..
if(!Array.indexOf){
   Array.prototype.indexOf = function(obj){
      for(var i=0; i<this.length; i++){
         if(this[i]==obj) return i;
      }//from   ww  w.j av  a 2 s  .  c o  m
      return -1;
   }
}

Related

1. contains(obj)

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

2. contains(obj)

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

3. contains(obj)

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

4. contains(obj)

   Array.prototype.contains = function(obj) { 
       var i = this.length;
       while (i--) {
           if (this[i] === obj) {
               return true;
       return false;
   };
   ...
   

5. contains(obj)

   Array.prototype.contains = function(obj){
     var i = this.length
     while(i--){
       if(self[i] == obj){
         return true
     return false
   

6. contains(obj)

   Array.prototype.contains = function(obj)
       return (this.indexOf(obj) > -1);
   

7. contains(obj)

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

8. contains(obj, firm)

   Array.prototype.contains = function(obj, firm) {
     firm = firm === true ? true : false;
     var i = this.length;
     while (i--) {
       if ((!firm && this[i] == obj) || this[i] === obj) {
         return true;
     return false;
   ...
   

9. contains(object)

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