How to check user has clicked refresh button or close x

Question

I have to check in my page that page is unloaded by refresh button or close window button, How is it possible using java script / jquery?

Answer 1

Javascript is

window.unload = <function>

jquery is

$(window).unload(<function>)

or there are also beforeunload events, it depends on what you are trying to do as to the event timing

window.onbeforeunload = confirmExit;

function confirmExit()
{           
   return "Not leaving page";
}

These will be called when the page is unloaded, by refreshing, closing the window/tab or navigating away from it (either by a link or by replacing the url).

Be aware that some people may have browsers that may filter out certain script events or actions - what was it, exactly, that you were trying to acheive?