[RESOLVED] AJAX and JS classes

[suntra]

Hi,

I just wrote a JS class for AJAX today, but I ran in some trouble with the function receiving the server response...

I used "this.objAJAX" to refer to the HTTP Request object...

Within any functions, no problem, except for the one receiving the response...

If I call that function directly, fine, it "knows" what this.objAJAX is. But when it called to receive the HTTP response, it doesn't know what it is !

Is this normal ? Is there a way to solve this, or the only possibility is what I did, create an object OUTSIDE the class ?!

[dougal85]

What javascript library are you working with? Usually they can help you with this.

I assume you are using one since you are talking in terms of class's.

You can also have this problem with setTimeout's.

mooTools fixes it like setTimeout(this.functionToCall().bind(), 1000);

Basically what that does is pass the reference to the object.

I think without a library you need to do something like;

var self = this;
setTimeout(function(){self.functionToCall()}, 5000);

Hope that helps.

[suntra]

I just had to use objAJAX instead of this.objAJAX, this way, it is accessible to the onreadystatechange-associated function 😉