Permission denied call for XMLHttpRequest.open

[zafiro]

I've been trying to follow some of the examples from this site since yesterday (including the one at http://extjs.com/learn/Tutorial:Introduction_to_Ext). I managed to have them working on IE, but when using Firefox (in Windows and Linux), any attempt to contact a server broke with:

Error: [Exception... "'Permiso denegado para llamar el m

[efege]

It's a security limitation of the XmlHttpRequest object: requests can only be made to the same domain as that of the page where the script is running. When you access your page using file:// instead of http:// you clearly have different domains.

I think this point should be mentioned in the tutorial...

[zafiro]

Wao, thaks. Knowing that would have saved me a lot of time yesterday. It should definitely be there.

[efege]

zafiro: note added (http://extjs.com/learn/Tutorial:Introduction_to_Ext#Using_Ajax); please check it and do/suggest any improvements if you wish.

I had noticed this problem a few days ago while reviewing the Spanish translation (http://extjs.com/learn/Tutorial:Introduction_to_Ext_%28Spanish%29#Usando_Ajax), and added a note there, but forgot to add it also to the original. Sorry.