I have often experienced while developing my web applications that pressing F5 or refresh doesn\'t produce or refresh the proper result. But when we hit Ctrl
F5 and the refresh button will look at your browser cache before asking the server for content.
Ctrl + F5 forces a load from the server.
You can set content expiration headers and/or meta tags to ensure the browser doesn't cache anything (perhaps something you can do only for the development environment).