“Origin null is not allowed by Access-Control-Allow-Origin” in Chrome. Why? [duplicate]

I am working on some Javascript to run locally on my PC. I am using a jQuery CSV plugin (http://plugins.jquery.com/project/csv) to load load a csv file into javascript arrays. The script is simple:

$(function(){
 $.get("file.csv", function(data){
  stuff = $.csv()(data);
 })
})

In Firefox it works fine but in Chrome it says "Origin null is not allowed by Access-Control-Allow-Origin". What does that mean? I find all sorts of threads about cross-server stuff related to this error but I am just working with local files.

Answers:

Answer

It's like crossdomain for some unclear reason (each browser acts a bit differently regarding this issue, you could even try IE and see the results). You should try and run it through a web server, and give it an absolute path since the javascript runs locally.

Answer

You can try running it on your apache web server. It will work.

Answer

Chrome doesn't believe that there's any common relationship between any two local files.

You can start it with the option "--allow-file-access-from-files" to tell it you disagree.

Thanks to the ascendant master Nick Craver for this info when I asked essentially the same question some time ago.

Answer

If you are using Mac OS X, open up the Terminal, cd to your web root and run:

python -m SimpleHTTPServer

Then open the following URL in Chrome (or any other web browser):

http://0.0.0.0:8000

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