how to prevent to change selectbox value if i say no to confirm

Question

i m using a select box of country, when user select a country then add branch link appears and user add branches under that country, but when user want to change country then al

Answer 1

Below solution worked for me. First of all onfocus is called. This event keeps the current value in a attribute "PrvSelectedValue". Secondly onchange is called, we set the previous value if user cancel the confirmation popup.return false is used to prevent the postback in ASP.NET.