Thank you!
I'm still confused about the syntax, but this saved my problem.
- D.
On Mar 24, 3:59 am, kangax <[EMAIL PROTECTED]> wrote:
> You need to "bind" the actual callback function (since it will be
> executed in a global context otherwise):
> ...
> onSuccess: function(data) {
> // do some processing...
> this.callback(); // <= "bind" ensured that "this" refers to your
> instance}.bind(this)
>
> ...
>
> - kangax
>
> On Mar 23, 7:20 pm, dj <[EMAIL PROTECTED]> wrote:
>
> > Ahhh thank you for your answer. It really saved me.
> > Where can I read some detailed documentation regarding "this" keyword
> > and how to use it correctly with prototypejs?
>
> > I have one more question regarding this (I'll keep the same example):
>
> > var SuperClass = Class.create();
> > SuperClass.prototype = {
> > test : "Test data is ",
> > initialize : function(){
> > this.doRequest();
> > },
> > doRequest : function() {
> > new Ajax.Request('somedata.php', {
> > method: 'get',
> > onSuccess :
> > this.callback.bind(this) <<== **here**
> > } );
> > },
> > callback : function(data) {
> > alert(this.test+":"+data);
> > }
>
> > };
>
> > if I want to have instead of this.callback.bind(this) implemented
> > function which calls callback (only when needed) for example:
>
> > var SuperClass = Class.create();
> > SuperClass.prototype = {
> > test : "Test data is ",
> > initialize : function(){
> > this.doRequest();
> > },
> > doRequest : function() {
> > new Ajax.Request('somedata.php', {
> > method: 'get',
> > onSuccess :
> > function(data) { do some processing; . . . **
> > this.callback.bind(this); how to call callback from here ** }
> > } );
> > },
> > callback : function(data) {
> > alert(this.test+":"+data);
> > }
>
> > };
>
> > Thank you.
> > D.
>
> > On Mar 23, 12:43 am, jdalton <[EMAIL PROTECTED]> wrote:
>
> > > You need to bind this.callback();
> > > because its loosing the proper scope of
> > > "this".http://www.prototypejs.org/api/function/bind
>
> > > this.callback.bind(this)
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