JS class pattern [3]

klass3.js

// AMD module definition:
define(function (require) {

  // An instantiable class:
  var ClassName = function () {
    // All private instance data is stored in this._
    this._ = {};
    this._initialize();
  };
  
  
  // A constant
  ClassName.MEANING_OF_LIFE = 42;
  
  
  // A "private" method begins with an underscore:
  ClassName.prototype._initialize = function () {
  }


  // A public method does not begin with an underscore:
  ClassName.prototype.update = function () {
  }


  return ClassName;

});

The nice thing about this is that with a real class name — rather than the anonymous standard K — it is easier to inspect in the console. It's still anonymous enough that things can reassign it on require. There is some verbosity in all the ClassName.prototype prefixes.

Putting all 'private' instance data in this._ seems quite nice — the underscore is more suited to this than p.