jQuery.ajax call fails inside Chrome extension

Question

I\'m porting one of my Firefox extensions to Chrome, and I\'m running into a little problem with an AJAX query. The following code works fine in the FF extension, but fails

Answer 1

The accepted answer is outdated.

Content scripts can now make cross-site XMLHttpRequests just like background scripts!

The concerning URLs need to be permitted in the manifest:

{
  "name": "My extension",
  ...
  "permissions": [
    "http://www.google.com/"
  ],
  ...
}

You can also use expressions like:

"http://*.google.com/"
"http://*/"

to get more general permissions.

Here is the Link to the documentation.