I will admit, I had to google what test driven development was because I was not familiar with the term.
For myself, I have gotten into the habit of testing my pages after each major section is added in. For example, if I do a insert modal, I’ll test it. Then add app structure validation. Test it again. Then add server validation. Test it again. Then look at any repeats or conditions I might need and test it again.
I am not sure if that is what you mean or not, but I have found that it works for me.
On thing I have not been doing, but I am going to start doing is catching errors in the server side. It was recently brought up in a different thread and after doing some searching on the forum, I think I understand it more and I think it would be a good idea to start implementing on a regular basis. Catch, Server Connect?