I think a better way of doing it rather than augmenting the prototype
is create your own function/object that is a delegate. I guess
something like:
var elementDisabled = function(){
return this.hasClass('disabled');
}
And then call it by doing elementDisabled.call(myEl); Or you can even
just have the funciton take the element. Augmenting the built-in
prototypes usually doesn't turn out too well.
------------------------
Gary Katsevman
Computer Science Undergraduate
Northeastern University
gkatsev.com
On Sun, Mar 20, 2011 at 15:17, Jarek Foksa <[email protected]> wrote:
> I do a lot of operations on objects retrieved by querySelector() and
> simillar DOM methods, so I thought it would be nice to extend the
> built-in Element object with some useful methods and properties.
>
> So far I didn't have any problems when adding new methods to
> prototypes, but the things are not so obvious to me when I'm trying to
> add new properties.
>
> For example, I would like to add Element.prototype.disabled property
> that would be set to true if the given element has class "disabled"
> and to false otherwise. My first thought was to alter the constructor
> function, but it's not feasible in this case because it's a built-in
> object. Another (probably silly) idea was to do this:
>
> Element.prototype.disabled = (function() {
> if (this.hasClass('disabled') {
> return true;
> } else {
> return false;
> }
> })();
>
> which didn't work as well.
>
> Could you give me some hints what is the proper way to achieve may goal?
>
> Thanks in advance for any help!
>
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