Hi,
It's the fisrt time that I work with javascript and that I use P.O.O.
javascript.
I saw some lessons on javascript, I start to understand.
You are right, my problem isn't "this".
I retried, the problem is in the function "Ajax.Request".
example code :
url : function(object) {
new Ajax.Request(
object.php, {
method: object.method,
parameters: {url_analyse : this.value_event},
onComplete: function (xhr, json){
if (json) {
var str = '';
json.each(function (item) {
str += item.reponse;
});
show_message(str;);
}
},
}
);
}
If the function "show_message" is in " new Ajax.Request()" , the result
corresponds to the Request.
But if the function "show_message" is outside "new Ajax.Request()" then the
result corresponds to the previous Request.
I don't understand why ?
Thank.
Laurent
2010/11/2 T.J. Crowder <t...@crowdersoftware.com>
> Hi,
>
> I'm afraid your question doesn't make a lot of sense, I think a great
> deal has been lost in translation.
>
> But `this` is special in JavaScript: It's set entirely by *how a
> function is called*, not *where a function is defined*. This is
> different from other languages. More here:
> http://blog.niftysnippets.org/2008/04/you-must-remember-this.html
> http://api.prototypejs.org/language/function/prototype/bind/
>
> HTH,
> --
> T.J. Crowder
> Independent Software Engineer
> tj / crowder software / com
> www / crowder software / com
>
> On Nov 1, 8:14 pm, laurent barre <houpde...@gmail.com> wrote:
> > Hi,
> >
> > I have a function Ajax.Responders , but i can't catch the paramater
> "this"
> > and i can't modify the value of the parameter "this".
> >
> > the result>one : the value is 'url'
> >
> > >two : equal *"no_good"*
> >
> > > three : undefined
> >
> > I try to find a solution, I think that in javascript , the transfert of a
> > global variable(this) is not possible, do you have a solution ? or a
> > explication ?
> >
> > Code
> ----------------------------------------------------------------------
> >
> > *this.element = 'url';
> > this message = 'no_good';
> >
> > trace(this.element); > one
> >
> > Ajax.Responders.register({
> > onComplete: function (xhr, json){
> > if (json) {
> > var str = '';
> > json.each(function (item) {
> > str += item.reponse;
> > });
> > this.message = str; > two
> > trace(this.element); > three
> >
> > }
> > }});
> >
> > *
> > Code
> > ------------------------------------------------------------------------
> >
> > thanks,
> >
> > Laurent
>
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