XMLHttpRequest cannot load http://localhost:8080/exist/rest/db/.... Origin null is not allowed by Access-Control-Allow-Origin

I am trying to retrieve an XML response using ajax calls to the eXist DB REST API(1). Google Chrome provides me the following console error: ``` XMLHttpRequest cannot load XMLHttpRequest cannot load http://localhost:8080/exist/rest/db/movies?_query=%2Fmovies. Origin null is not allowed by Access-Control-Allow-Origin Origin null is not allowed by Access-Control-Allow-Origin ``` While Firebug in Firefox provides the following console error: ``` GET http://localhost:8080/exist/rest/db/movies?_query=%2Fmovies 200 OK X 35ms jquery.min.js(line 18) ``` Here is the ajax portion of the code: ``` $.ajax({ type: 'GET', dataType: 'xml', url: 'http://localhost:8080/exist/rest/db/movies', data: { _query: _query_value, _key: _key_value, _indent: _indent_value, _encoding: _encoding_value, _howmany: _howmany_value, _start: _start_value, _wrap: _wrap_value, _source: _source_value, _cache: _cache_value }, success: function(resp){ alert("Resp OK!"); console.log(resp); }, error: function(hqXHR, textStatus, errorThrown){ var x=0; alert("fail0 " + hqXHR + " " + textStatus + " " + errorThrown); } }); ``` I have read some related issues on this same problem, but I have found no luck with any of the solution that I tried. The index.html which contains the ajax code segment above is accessed from my local machine as follows: ``` file:///.../index.html ``` I have tried executing chrome as follows: ``` chrome.exe --allow-file-access-from-files ``` Also, I tried to deploy the file to an online host so that it is located at ``` http://www.<somedomain>.com/index.html ``` The closest solution that I had was to change the dataType of the from xml to jsonp. The reponse was received, but since it is expected to be xml, the error became related to parsing, I think, with the following statement returned by the Google Chrome console: ``` Uncaught SyntaxError: Unexpected token < ``` and Firebug console: ``` XML can't be the whole program [Break On This Error] </exist:result> movies...3302057 (line 528, col 15) ``` Going back to my question, how can I properly retrieve the xml document via eXist DB? What am I doing wrong? Looking forward to your help. I'm quite new to web development and am running out of ideas. Thanks in advance! Other notes: The jquery.min.js that I'm using is located at http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js The URI `http://localhost:8080/exist/rest/db/movies?_query=%2Fmovies` works when directly keyed in to any browser. Reference: ``` (1) - http://www.exist-db.org/exist/devguide_rest.xml;jsessionid=e7096vtg4l7gmocouhe6zhle ``` Updates (1) It seems that I was able to get rid of the CORS problem by running eXist DB as a server as follows: bin/server.sh (in UNIX) or bin\server.bat (in Windows). Now, I am running into another type of problem, though. I get the following error in the Google Chrome console using jquery.js: ``` GET http://localhost:8080/exist/rest/db/movies?_query=%2Fmovies jquery.js:8240 jQuery.ajaxTransport.send jquery.js:8240 jQuery.extend.ajax jquery.js:7719 (anonymous function) index.html:43 jQuery.event.dispatch jquery.js:3332 jQuery.event.add.elemData.handle.eventHandle jquery.js:2941 ``` and using jquery.min.js: ``` GET http://localhost:8080/exist/rest/db/movies?_query=%2Fmovies jquery.min.js:18 f.support.ajax.f.ajaxTransport.send jquery.min.js:18 f.extend.ajax jquery.min.js:18 (anonymous function) index.html:43 f.event.handle jquery.min.js:17 f.event.add.i.handle.k jquery.min.js:16 ``` What does the error mean? Which part of my code am I doing wrongly? (2) Update 1, apparently, is an unnecessary problem that I faced. The server mode wasn't working with my machine that's why the errors above showed up.