Salesforce REST API Login?

I am examining a sample which is in the salesforce developer site.

In that sample when we click a link it will be redirected to the salesforce login page. If the login successful, then an access token is issued.

I dont want my application to redirect to the salesforce login page. In the existing sample the environment variable is set to,

"https://login.salesforce.com"

What should I do to avoid redirecting to salesforce login page.

Solution

What you're describing, sounds like OAuth (just because you mention access-token).

There's a good example of OAuth being used in Salesforce below...