How to run a javascript function before postback of asp.net button

Question

I have an asp.net button which is runat server, there is a function handle that postback of button onclick.

How can I display a \"loading ...\" word in

Answer 1

Look at OnClientClick, you can add a call to a js function, or inline JS there.

Or you can wire into the button with JQuery and display a modal dialog with an async callback.