Event listener vs event handler

Question

Can someone explain what is the proper way to make certain actions call functions in javascript? Should I use event handlers like onclick="callFunction();"? Or should I use an event listener? If yes, how do they work?

Answer 1

Read this:

http://www.quirksmode.org/js/events_tradmod.html

Then read this:

http://www.quirksmode.org/js/events_advanced.html