How to find exact controller which is executed in mvc

I am new to mvc so in mvc if there are several javascripts written on a button click and might be controller action method is not the same we see in url.. so how can we exactly find out which is the action method been executed on button click.In simple way how to find which controller action is been executed on button click.Also can we find it out using F12 in google chrome? As in asp.net we can directly choose the button from design and see the events being fired on that button click isn't there any simple way to find this?