jQuery Forum

Some browsers will not Ajax from a file on your computer. You need a server.

Also, there can be issues with same-origin policy. The directory on your computer from which the page was loaded is considered the "origin". You cannot load a page from outside of the origin (up to a higher directory, on a different drive, etc.) either with or without Ajax. Your browser may have a setting to defeat this - usually a hidden setting.

Every browser is different about this. Some are more permissive than others. You can force Chrome to change the policy with a hidden setting. Safari just works (when origin is a file on your filesystem). I guess Apple figures if you are loading it from your filesystem, you know what you are doing, no reason to enforce a policy. If the origin is a website, though, it is enforced, and you can see why... it could be easily abused by websites. A website could get access to your private files!

Why not just install a server, and test under realistic conditions? They are easy to install, you can get a simple install package for any OS.

i am using chrome.... is it require any server to load my text file in html page 

For your own computer, you can override the behavior.

https://blog.nraboy.com/2014/08/bypass-cors-errors-testing-apis-locally/

Don't leave this set when you browse the web! It is dangerous.