HTML window object onclose or closing event

Question

Is the window object onclose() or closing() event exposed in HTML/Javascript?

Answer 1

I think you want the onUnload event.

Answer 2

You have both onunload() and onbeforeunload() javascript events for that.

Answer 3

There is no event that lets you determine the difference between a page refresh, form submission, link clicked, or browser closed.

I am guessing that is what you are really after.