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Why doesn't jquery .load() load a text file from an external website?

Answer 1

+1 A:

I don't think any browser obeys clientaccesspolicy.xml or crossdomain.xml for XMLHttpRequest.

There are other mechanisms you can look at, such as Cross-Origin Resource Sharing. This is supported by Firefox 3.5 and later.

Matthew Flaschen 2010-04-29 03:58:11

I also put a crossdomain.xml in the root directly, still doesn't read any text.

Edward Tanguay 2010-04-29 04:02:23

Crossdomain is for flash. No file you put anywhere will allow a javascript from another site to load from a script call.

webdestroya 2010-04-29 04:04:39

Answer 2

+3 A:

Clientaccesspolicy has no affect on javascript. Most (maybe all?) modern browsers will prevent you from running cross-site-scripting, as it is a security risk.

Your alternative is to proxy that site through a file on your own site, like /proxy.php?loadurl=http://theothersite.com and then call that file via the Javascript, which would be allowed since it is from your domain.

webdestroya 2010-04-29 04:01:19

I tried it with this http://www.tanguay.info/web/getdata/index.php?url=http://www.tanguay.info/knowsite/data.txt which internally gets text via PHP/CURL and works in silverlight for any site without clientaccesspolicy.xml, so it should work here. How do I debug this? In Firebug I see that .load() is being executed but not what it is returning, what error, etc. :-(

Edward Tanguay 2010-04-29 04:10:27

Using a proxy script like that will work in anything, but why not just add a `console.log` statement to see what is being echoed? And firebug **will** tell you all the HTTP requests and their responses. As long as you have the console open.

webdestroya 2010-04-29 04:15:06

thanks for the console.log tip, but where in firebug do I get the http request/response/error information, posted a specific question on this: http://stackoverflow.com/questions/2734887/how-to-get-firebug-to-tell-me-what-error-jquerys-load-is-returning

Edward Tanguay 2010-04-29 05:04:40

Firebug should show you the content in the **Net** tab

webdestroya 2010-04-29 05:36:25

I like this solution, how it calls another php program within the domain of the original script to load in the page you want, without getting javascripts cross site errors.For Javescript to access a file in tanguay.info/web/getdata/ it must be called from within domain tanguay.info/ or it will generate a xss error.Oh and jquery is up to version 1.4.2, it might have some bug fixes?

Hellonearthis 2010-05-01 17:41:43

Answer 3

+1 A:

Instead do a request for the text via a script tag:

$('<script type="text/html"></scr'+'ipt>')
   .attr('src', url_to_textfile)
   .appendTo('body').load(function(e){

    $('#content').html($(this).html());
    $(this).remove();

});

This is a poorman's jsonp, which would be the actual best choice for this, if you have control over the other resource.

Alex Sexton 2010-04-29 04:53:57

Nice!!!!!!!!!!!

Strelok 2010-04-29 05:05:55

Save some exclamation marks for the next generation!

Alex Sexton 2010-04-30 01:52:26

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Why doesn't jquery .load() load a text file from an external website?

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