How to disable backspace if anything other than input field is focused on using jquery

Question

How do I disable backspace keystroke if anything other than 2 specific input fields are focused on using jquery?

here is my current code (NOW INCLUDING 2 TEXTBOXES):

Answer 1

I too have worked hard on the same. Finally, I found the answer and for everybody's convenience I've placed the solution on http://blog.totusinfo.com/jquery-disable-backspace-for-document-history-except-inputs-and-textarea/