javascript return true or return false when and how to use it?

Question

So I see a lot of JavaScript code (have written some myself) that does something like

Answer 1

returning true or false indicates that whether execution should continue or stop right there. So just an example

Now if func() is defined like this

function func()
{
 // do something
return false;
}

the click event will never get executed. On the contrary if return true is written then the click event will always be executed.