Re: [Rails-spinoffs] Prototype OOP example

Sat, 24 Dec 2005 13:05:18 -0800

Here's one approach:

Labour = Class.create();
Labour.prototype = {
  initialize: function(name) {
    this.name = name;
  },
  showMeYourName: function() {
    alert(this.name);
  }
}

Worker = Class.create();
Worker.prototype = Object.extend(Labour.prototype, {
  initialize: function(name, position) {
    this.name = name;
    this.position = position;
  },
  showMeYourPosition: function() {
    alert(this.position);
  }
});

var labour = new Labour('Bob');
labour.showMeYourName();

var worker = new Worker('Joe', 'Boss');
// call "base" class method
worker.showMeYourName();
// ... and invoke new Worker class method
worker.showMeYourPosition();


This just replaces the existing initialize with a derived version.  There's no provision to call Labour.initialize in Worker.initialize.  You do get everything else though...

Cliff


On Dec 24, 2005, at 14:49, QnA wrote:

Hi,
 
Here is what I want to do:
 
Labour = Class.create();
Labour.prototype = {
    initialize:function(name){
        this.name = name;
    }
}
 
 
What I want to do is create a class called "Worker" which will inherit from "Labour", and the signature of "initialize" is "function(name, position)".
 
May I ask what should do?
 
 
Thank you all very much for the kindly help.
Wish you all with a Merry Christmas.
 
 
Regards,
QnA
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