Anthony Palomba

I was wondering if there is a way to declare classes in javascript

and instantiate them? Does anyone have an example that demonstrates this?

I was wondering if there is a way to declare classes in javascript
and instantiate them? Does anyone have an example that demonstrates this?

classesinheritance-in-javascript

Hi see the thread "rendering multiple gridshapes w/ openGL in js" in

the javascript-dev forum which is probably a better place to ask this

On Jan 8, 2008 10:13 AM, Anthony Palomba wrote:

> I was wondering if there is a way to declare classes in javascript

> and instantiate them? Does anyone have an example that demonstrates this?

Hi see the thread "rendering multiple gridshapes w/ openGL in js" in
the javascript-dev forum which is probably a better place to ask this
question.

On Jan 8, 2008 10:13 AM, Anthony Palomba  wrote:
>
> I was wondering if there is a way to declare classes in javascript
> and instantiate them? Does anyone have an example that demonstrates this?
>
>
> Thanks,
> Anthony
>


moving this topic to the javascript forum

You can do this in javascript but it is pretty strange. Here's an example:

    this.member = "a member variable";

Javascript is a prototype-based langauge rather than a standard OO language. This means you define a constructor as a function, and attach methods to the class by assigning them to the constructor function's prototype property.

Many attempts have been made to simulate standard OO inheritance in javascript. If that is something you are interested take a look at this:

http://www.sitepoint.com/blogs/2006/01/17/javascript-inheritance/

I am not recommending this person's approach, but the blog post is good because it provides lots of links and discussions to alternate approaches. One of them may suit you.

If you want to learn JavaScript better, I highly recommend the book "JavaScript The Definitive Guide" published by O'Reilly. It is by far the best javascript reference I have encountered. No online resources come close.

Quote: Anthony Palomba wrote on Tue, 08 January 2008 10:13

----------------------------------------------------

Hi Anthony,
You can do this in javascript but it is pretty strange. Here's an example:

-----
function Class() {
	this.member = "a member variable";
}
Class.prototype.method = function() {
	post(this.member + "n");
}

instance = new Class();
instance.method();
----

Javascript is a prototype-based langauge rather than a standard OO language. This means you define a constructor as a function, and attach methods to the class by assigning them to the constructor function's prototype property. 

Many attempts have been made to simulate standard OO inheritance in javascript. If that is something you are interested take a look at this:
http://www.sitepoint.com/blogs/2006/01/17/javascript-inheritance/
I am not recommending this person's approach, but the blog post is good because it provides lots of links and discussions to alternate approaches. One of them may suit you.

If you want to learn JavaScript better, I highly recommend the book "JavaScript The Definitive Guide" published by O'Reilly. It is by far the best javascript reference I have encountered. No online resources come close. 

Quote: Anthony Palomba wrote on Tue, 08 January 2008 10:13
----------------------------------------------------
> I was wondering if there is a way to declare classes in javascript
> and instantiate them? Does anyone have an example that demonstrates this?
>
>
> Thanks,
> Anthony
----------------------------------------------------


For those in the future, this tutorial provides a lot of great examples for declaring classes in Javascript with the old syntax used in the Max js object.

https://www.newthinktank.com/2015/09/object-oriented-javascript/

For those in the future, this tutorial provides a lot of great examples for declaring classes in Javascript with the old syntax used in the Max js object.
https://www.newthinktank.com/2015/09/object-oriented-javascript/ 

Classes/inheritance in javascript?