Difference betwen button and asp:button onclick

Question

I am new to developing in asp.net for making web sites. So I having some trouble understanding the difference between the following. What is the difference between an asp:Bu

Answer 1

The first is a server side control and the event handler is executed on the server in C#. Clicking the button will cause a postback and all information in the form will be posted to the server for processing, including a call to the click event handler.

The second is fully client side and the event handler is executed in the browser in JavaScript.