jQuery Promises: The answer to PostMessage's asynchrony

Visual Website Optimizer's editor component loads a website for editing using a proxy tunnel. It put a big restriction on what kind of websites could be loaded in it. Websites behind a firewall, the ones on a local network, or behind HTTP authentication could not be loaded using the tunnel. Other than those, even if the website did load in the editor, chances were that it could break on the…

This is an excerpt. The full article continues at Wingify.