Nodejs Array Has Object hasObjectExists(item)

Method Source Code

Array.prototype.hasObjectExists = function(item) {
    for (i = 0; i < this.length; i++) {
        if(this[i].id == item.id){
            return true;
        }/*from w w w .j a  v  a2s  .  c  o m*/
    }
    return false;
};

Related

1. hasObject(

   Array.prototype.hasObject = (
     !Array.indexOf ? function (o)
       var l = this.length + 1;
       while (l -= 1)
           if (this[l - 1] === o)
               return true;
   ...
   

2. hasObject(o)

   Array.prototype.hasObject = function (o)
       var l = this.length + 1;
       while (l -= 1)
           if (this[l - 1].name === o.name)
               return true;
       return false;
   

3. hasObject(o)

   Array.prototype.hasObject = (!Array.indexOf ? function (o) {
     var l = this.length + 1;
     while (l--) {
       if (this[l - 1] === o) {
         return true;
     return false;
   } : function (o) {
   ...