add : function(cmp,event,helper) {
event.target.parentNode.style.display = 'none';
document.getElementById("cartdiv").style.display = 'block';
 var selectedAccount =event.target.id;
   var act = cmp.get("c.Cartveg");
    act.setParams({"s":selectedAccount});
act.setParams({"cartlist" : cmp.get("v.cart")});
        act.setCallback(this,function(a){
        cmp.set("v.cartitem",a.getReturnValue());
    });
    $A.enqueueAction(act);


    cmp.set("v.whichButton", selectedAccount);

  }

@AuraEnabled
public static List<Vegetable__c> Cartveg(string s,List<Vegetable__c> cartlist)
{       system.debug(s);
  List<Vegetable__c>  clist= [SELECT Id, Name , Price__c , img__c FROM Vegetable__c where Name =:s];

    clist.addAll(cartlist);
    system.debug(clist);
    return clist;
}