The correct design of the calling of javascript functions

Right — when it runs, if you are interested in the technique of Unobtrusive Javascript, I advise you to brush up the DOM, starting from the second level, there is a description of the event. It has its fineness and a non-standard implementation in Microsoft Internet Explorer. But I repeat: the true test and right when it all works, and how you did it no one is interested!

1. Hang up event to the selector
2. onclick
3. For links like this: href="javascript:funcName()"

to more accurately describe the elements selectors and hang handlers

You can look at the JQuery library as there is implemented a function call to events like click, change, etc.