Cross-domain AJAX tutorial anyone??

[shachi]

Hi all,
I was just curious about cross-domain AJAX and I wanted to know how it works ... so if anyone knows how it works or has a tutorial about it please kindly post it here, it may not only help me but also some others who are intrested in this subject. Thanks!!

[blm126]

It is not possible. You can use PHP to get data from another domain, but not with just javascript.

[shachi]

blm126: I *am* using PHP. I don't think that making interactive pages(which do dynamic queries) can be done only with javascript. I hope that it makes sense.

[Twey]

I was just curious about cross-domain AJAX and I wanted to know how it works

A server-side script on your domain is used to load and output the content, then the XMLHttpRequest object reads that file like normal. A simple example (not that you should use this, of course; much more checking is required) is:

<?php
  // golden.php
  die(file_get_contents($_GET['url']));
?>

By open()ing:

xhr.open("GET", "golden.php?url=" + encodeURIComponent("http://www.google.com/"), true);

that file with the correct GET variable, any page on the Internet can be retrieved.

[shachi]

Twey: even google search results?? and json objects(or whatever)?

[Twey]

Indeed.

[shachi]

Oh cool!!! Can you give me some more examples of data fetching Twey??

[Twey]

Er? What more is there to demonstrate? :-\

[shachi]

I mean can I just bring whole web pages with it and XML data islands??

[Twey]

Of course. Just like you can with normal AJAX. It's just redirected through a server-side script, is all.