Showing posts from July, 2012

Using XMLHttpRequest.getResponseHeader to get Json Response Headers in jQuery

Introduction While developing a web page with a summary graph and a detail grid below, I needed to pass a small amount of data outside of the existing Json call data sets. I also wanted to do this without another asynchronous call back to the server. I wound up stuffing the data in a custom http response header while already on the server. This article explains how I retrieved the data on the client. Existing Client Libraries Both the graph and the grid were independent jQuery libraries with very specific Json response requirements. Stuffing the small amount of data in one of those response data sets could have been done with enough tinkering but I wasn’t sure how this would affect those libraries now or in future versions. While the data was related, it was also separate and I wanted the code design to reflect that. Server Http Response Stuffing This project uses Asp.Net MVC 4. The code to add the small amount of data should be the same across the .Net platform: HttpCon