Comments on: How to inherit classes in javascript

By: check this

check this — Sat, 28 Jan 2012 08:14:20 +0000

Awesome website…

[...]the time to read or visit the content or sites we have linked to below the[...]……

By: Joe_bolla

Joe_bolla — Sun, 08 Jan 2012 21:04:00 +0000

Here is a simple way to implement inheritance in Javascript:
Person = function(id, name, age){ this.id = id; this.name = name; this.age = age; alert(‘A new person has been accepted’);}Person.prototype = { /** wake person up */ wake_up: function() { alert(‘I am awake’); }, /** retrieve person’s age */ get_age: function() { return this.age; }}Inheritance_Manager = {};Inheritance_Manager.extend = function(subClass, baseClass) { function inheritance() { } inheritance.prototype = baseClass.prototype; subClass.prototype = new inheritance(); subClass.prototype.constructor = subClass; subClass.baseConstructor = baseClass; subClass.superClass = baseClass.prototype;}Manager = function(id, name, age, salary) { Manager.baseConstructor.call(this, id, name, age); this.salary = salary; alert(‘A manager has been registered.’);}Inheritance_Manager.extend(Manager, Person);Manager.prototype.lead = function(){ alert(‘I am a good leader’);}var p = new Person(1, ‘Joe Tester’, 26);var pm = new Manager(1, ‘Joe Tester’, 26, ’20.000′);

alert(p.name);alert(pm.salary);View all code here with demos:
http://www.cyberminds.co.uk/blog/articles/how-to-implement-javascript-inheritance.asp

By: Joe_bolla

Joe_bolla — Wed, 21 Dec 2011 21:38:00 +0000

Try this simple example http://www.cyberminds.co.uk/blog/articles/how-to-implement-javascript-inheritance.aspx

By: dsimard

dsimard — Fri, 14 Oct 2011 15:45:00 +0000

I don’t think you can do it.

By: Viktor Eriksson

Viktor Eriksson — Fri, 14 Oct 2011 15:40:00 +0000

How do I inherit new Document() ?
Only get error.

By: Parminavilum

Parminavilum — Thu, 13 Oct 2011 02:49:05 +0000

Awesome website…

[...]the time to read or visit the content or sites we have linked to below the[...]……

By: Nasr

Nasr — Mon, 01 Aug 2011 14:07:59 +0000

I've tried this code but alert(cat2.x) resulted 1 not 2, am i missing something?

By: Eric B.

Eric B. — Wed, 06 Jul 2011 07:09:09 +0000

Look at my post

By: Eric B.

Eric B. — Wed, 06 Jul 2011 07:08:42 +0000

Look at my post

By: Eric B.

Eric B. — Wed, 06 Jul 2011 07:07:19 +0000

The above code works fine as long as you inherit a whole class with its own methods and member data. Lecastordesneiges is making member data “static” across all classes so the subclasses will see the reference to the super classes “static” member. Making “x” a literal and not instantiating a “new” x will result in accessing the same memory slot. You must “mammal.prototype = new some_beast();” so the subclass can inherit as a general base. Re-read what the man posted.