onbeforeunload event is not working when user not click inside the body of page
I want call one function when user open any page and without click on that page, he just close the page.
I have tried this to put one button and click on that button using coding after page loading is complete , but it is not working.
I am follow this link. W3School
In this link , when you not click in result portion and reload page then it will not display alert , but when you click result portion and reload page then it will displaying a alert.
This is because the onbeforeunload is attached to the <iframe>'s window object, and when you do unload the main page, this event won't fire unless you had focus on this iframe.
Same will happen with StackSnippet here:
onbeforeunload = e => true;<span>click to toggle iframe's focus</span>