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

问题

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.

回答1:

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.

回答2:

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

回答3:

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.

回答4:

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

来源：https://stackoverflow.com/questions/5224017/origin-null-is-not-allowed-by-access-control-allow-origin-in-chrome-why

标签

javascript

google-chrome

xmlhttprequest

cross-domain