禁止关闭IE中的JavaScript窗口

Question

I'm trying to debug an issue where the browser disappears after refreshing a particular page. I want to see if I can eliminate JavaScript as being the cause of this issue.

Does IE have an equivalent to the Firefox configuration option dom.allow_scripts_to_close_windows ?

Answer 1

I did some googling and this was the closest thing I could find, but I do not know if it also prevents JavaScript from closing windows.

Prevent Users from Closing the Browser or Explorer Windows

Edit: You can use the onbeforeunload event to see if the page is triggering some sort of close event.

window.onbeforeunload = function() {
  return "The browser is about to close this window, are you sure?"; // Will appear as a confirmation box
};