Leo's Blog

< script language = " javascript "  type = " text/javascript " >

function Hashtable()
{
     this ._hash         =   new  Object();
     this .add         =  function(key,value){
                         if (typeof(key) != " undefined " ){
                             if ( this .contains(key) == false ){
                                 this ._hash[key] = typeof(value) == " undefined " ? null :value;
                                 return   true ;
                            }  else  {
                                 return   false ;
                            }
                        }  else  {
                             return   false ;
                        }
                    }
     this .remove         =  function(key){delete  this ._hash[key];}
     this .count         =  function(){var i = 0 ; for (var k in  this ._hash){i ++ ;}  return  i;}
     this .items         =  function(key){ return   this ._hash[key];}
     this .contains     =  function(key){  return  typeof( this ._hash[key]) != " undefined " ;}
     this .clear         =  function(){ for (var k in  this ._hash){delete  this ._hash[k];}}

}

var a  =   new  Hashtable();

a.add( " aa " );
a.add( " bb " , 2342 );
a.add( " bb " , 2342 );

a.remove( " aa " );

alert(a.count());

alert(a.contains( " bb " ));

alert(a.contains( " aa " ));

alert(a.items( " bb " ));


</ script >