How can I load a local json file?

Question

Is there a way to configure firefox using about:config to allow local file access (for demo purposes)?

Specifically using FF12, I need to be able to

Answer 1

If the JSON file is on your local computer, access it like this:

<script type="text/javascript" src="myFile.json"></script>

You'll have to add that line to your offline project and remove it when it's live, but it's the best way to do it without any server-side assistance. You'll also have to remove your AJAX code for your demo, because it's not going to work on your local computer.

Answer 2

You can flip the security.fileuri.strict_origin_policy preference in about:config. But that opens up some security holes; moving your JSON to be in a child directory of the directory the HTML is in is a much better idea.

Answer 3

Ok, JSON requests using AJAX work just fine as long as your data files are down path from your originating HTML file. So I was trying to go up a level to _assets/ directory. The solution is to move _assets into the HTML current directory for access.

You can use AJAX with async=false in this case.