when i am doing http request i am getting cross domain. i want to scrap html from external website.
I assume you mean you are getting “cross domain access restricted”. If so, this really has nothing to do with Ionic. It is an issue with browsers and AngularJS in general so might be best answered elsewhere.
However, “scrapping” might not be the best option for client-side app anyway. Or do you mean you want users to see external website in your application?