Often, I'm going to have to be trucking an OAuth token around to make this API work and I'm going to want to respond to expired tokens and other exceptions in

Often, I'm going to have to be trucking an OAuth token around to make this API work and I'm going to want to respond to expired tokens and other exceptions in a rational way for the users benefit. Further, having History State and Custom Validation at my disposal are great tools to use when designing anything other than very simple forms. I'm not sure javascript should be seen as a burden here.