The only real way to do this is to move the method, as this.previous is
changed as soon as your function exits. For an example, check out how
Spinner.js in More overwrites Request.Html:
initialize: function(options){
this._send = this.send;
this.send = function(options){
var spinner = this.getSpinner();
if (spinner) spinner.chain(this._send.pass(options, this)).show();
else this._send(options);
return this;
};
this.previous(options);
},
On Mon, Sep 6, 2010 at 5:38 AM, berlinsurfer <[email protected]>wrote:
> Thank you, Arieh.
> Ant what about the arguments passed in apply ?
>
> On 6 Sep., 14:12, אריה גלזר <[email protected]> wrote:
> > I realy think you should read about call/apply/bind, and even better,
> read
> > the mootools code, so you could see that bind already uses apply.
> > anyway, this is what you are looking for:http://jsfiddle.net/TfhL8/4/
> >
> > and just to make it clear - the first argument to both apply and call
> > specifies what this will point to. failing to specify this argument will
> > result with only the global scope. But, if you already use bind, there is
> no
> > reason using call, as the function was already binded. When you use bind,
> > simply call the function itself:http://jsfiddle.net/TfhL8/3/
> >
> > hope this clarifies some of your confusion
> >
> > On Mon, Sep 6, 2010 at 2:45 PM, berlinsurfer <[email protected]
> >wrote:
> >
> >
> >
> > > I found the solution: I had to use apply instead. See the jsfiddle:
> > >http://jsfiddle.net/TfhL8/1/
> > > Thanks,
> > > Jan
> >
> > > On 6 Sep., 11:52, berlinsurfer <[email protected]> wrote:
> > > > Thanks, Arieh,
> > > > but that's not what I wanted to achieve. "This.previous" is referring
> > > > to the old function "doSomething". To make it clearer:
> > >http://jsfiddle.net/TfhL8/
> >
> > > > On 6 Sep., 11:42, אריה גלזר <[email protected]> wrote:
> >
> > > > > when using call, failing to pass a first argument, it will bind
> this to
> > > the
> > > > > null.
> > > > > you don't need both bind and call. Also, you can simply call fn:
> >
> > > > >http://jsfiddle.net/4ZzLs/
> >
> > > > > On Mon, Sep 6, 2010 at 12:27 PM, berlinsurfer <
> > > [email protected]>wrote:
> >
> > > > > > Hi,
> > > > > > a short question: is there a possibility to store this.previous()
> > > > > > (when refatoring a Class) within another function ?
> > > > > > This throws an error:
> > > > > > Request.HTML = Class.refactor(Request.HTML, {
> > > > > > ...,
> > > > > > onSomethingElse: function() {
> > > > > > var fn = function () {this.previous()}.bind(this);
> > > > > > fn.call();
> > > > > > }
> > > > > > });
> >
> > > > > > It says this.previous() is undefined. Why ? Even when logging
> "this"
> > > > > > via console.log, this.previous is marked as undefined. When
> calling
> > > it
> > > > > > directly it works however. Very strange to me...
> > > > > > Cheers,
> > > > > > Jan
> >
> > > > > --
> > > > > Arieh Glazer
> > > > > אריה גלזר
> > > > > 052-5348-561
> > > > > 5561
> >
> > --
> > Arieh Glazer
> > אריה גלזר
> > 052-5348-561
> > 5561
>
