Json Http

[dustcomposer]

I'm trying this w3schools tutorial about JsonHttp. All setted up but catch an error:

No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access.

I surfed to find solution but some suggest to use php. w3schools doesn't say anything about php in the tutorial above, so I get confused as I don't use php. All I want to do is open a .txt file (contains json) and access its some values. Any help?

 

Thanks!

 

* I run the function (js) from my pc to access .txt file which uploaded to a server.

 

 

[Ingolme]

Two things: XMLHTTP requests don't work on the local filesystem for some browsers for security reasons. The second thing is that you cannot request a file that´s on a different domain name unless the server has been programmed to send a particular header in the response.

 

Here's a page explaining about cross-domain requests: https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS

[dustcomposer]

so what should I do to get the tutorial work, can I simply upload the html page along with the js to the same folder where the .txt is (my web server)?

 

Thanks Ingolme.

[Ingolme]

If all the files are under the same domain name then it should work without any problem.

[dustcomposer]

Yes, it all works fine and doesn't have to be in the same folder.

Thanks again.