Hi all,
I have a bit of a problem with the onreadystatechange function of the
XMLHttpRequest.
I have an object with methods to download an image and to do something
with it after the download is finished.
The downloading is working fine, but when the onreadystatechange
function is called the variable "this" does not point to the object.
As if the method was somehow called "outside" the object.
To clearify see the following code (it is just a sample to demostrate
the problem):
> function createObject(){
> this.testVar = "test text";
> this.testDownload = function (){
> this.req = new XMLHttpRequest();
> this.req.open("GET", "http://www.google.com/webhp";, true);
> this.req.onreadystatechange = this.onChange;
> this.req.send();
> };
> this.onChange = function (){
> alert(testObject.testVar);
> alert(this.testVar);
> alert(typeof(this));
> alert(typeof(this.testVar));
> }
> }
> function view_onOpen() {
> testObject = new createObject();
> testObject.testDownload();
> }
When the function view_onOpen() is executed the first alert contains
the expacted "test text" but the second alert is just blank. typeof
(this) retruns "object" but typeof(this.testVar) returns "undefined".
What can I do to make it work, does anybody have an idea?
thanks and best regards
-Viktor
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Google Desktop Developer Group" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/google-desktop-developer?hl=en
-~----------~----~----~----~------~----~------~--~---
