What's the best way to define a class in Javascript

//  Define a class like this  Function  Person (name, gender ){  //  Add object properties like this     This . Name = Name;  This . Gender = Gender ;}  //  Add methods like this. All person objects will be able to invoke this Person. Prototype. Speak = Function () {Alert ( "Howdy, my name is" + This  . Name );}  //  Instantiate new objects with 'new'  VaR Person = New Person ("Bob", "M" );  //  Invoke methods like this Person. Speak (); //  Alerts "Howdy, my name is Bob" 

 

 

 

See detail:

http://stackoverflow.com/questions/387707/whats-the-best-way-to-define-a-class-in-javascript