Question

I am writing a FireFox-Extension and want to load Data from Server. But when I try to initialize the XMLHttpRequest with:

var request = new XMLHttpRequest();

The error console says:

ReferenceError: XMLHttpRequest is not defined

Do I have to include something or why the XMLTttpRequest is not recognized?

Answer 1

The Add-on SDK (that you are using indirectly via the Add-on Builder) provides a request package that is essentially a wrapper around XMLHttpRequest, you should use it. From what I understand, you aren’t given direct XMLHttpRequest access to prevent issues if the add-on is uninstalled/disabled while a request is being performed.