Javascript constructor, public, private privileges and static member definition methods_javascript skills

//Constructor
function myClass(message)
{
//Public properties
this.myMessage = message;

//Private properties
var _separator = ' -';
var _myOwner = this;

//Private method
function showMessage()
{
alert(_myOwner.myMessage);
}

//Privileged method (also public method)
this. appendToMessage = function(appendMessage)
{
this.myMessage = _separator appendMessage;
showMessage();
}
}
//Public method
myClass.prototype.clearMessage = function()
{
this.myMessage = '';
}
myClass.prototype = {
clearMessage:function(){
this.myMessage = '';
}
}
//Static property
myClass.myName = 'SOBusiness';
//Static method
myClass.alertName = function()
{
alert (this.name);
}