Login Oauth issue Using Jquery



I am working on twitter login using Jquery and Plain Java Script. I have completed most of work, I am trying to get request_token from https://api.twitter.com/oauth/request_token URL. Request goes from my page as well but every time it send me error of(in console):

OPTIONS https://api.twitter.com/oauth/request_token

XMLHttpRequest cannot load https://api.twitter.com/oauth/request_token. Response to preflight request doesn’t pass access control check: No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘http://kurbhatt.github.io’ is therefore not allowed access. The response had HTTP status code 400.

Object {readyState: 0, status: 0, statusText: “error”}

My request URL page is http://kurbhatt.github.io/twt.html, you can check it’s page source as well from https://github.com/kurbhatt/kurbhatt.github.io/blob/master/twt.html source page.

I have put valid and enough data from twitter apps to this page.

Can anyone tell me why I am facing this issue ?