Single-page app. Basically JS takes over most browser functions and you have your application running in a single "page", so to speak. For example, clicking on

Single-page app. Basically JS takes over most browser functions and you have your application running in a single "page", so to speak. For example, clicking on a link is a state transition in the app, so instead of telling the browser to go to the new link, the app will push new history to the browser history stack and do the transition itself. Think youtube.