如何在javascript中关闭子窗口显示确认消息？

Question

I have a parent window and when I click a link from parent window, the link opens in a new window. I need to show confirm message on close of child window.(ie the opened link )

childWindow = window.open("http://www.google.com","width=400, height=400");

I like confirm close for child window. like

childWindow.close(function(){var confirmClose=confirm("Are you sure to close ?");
});

If the user clicks "OK" of the confirm box then the child window will be closed, else if the user click "Cancel" then the child window will not be closed

Answer 1

使用onbeforeunload事件： https ： //developer.mozilla.org/en/DOM/window.onbeforeunload

Answer 2

To set up a confirm dialogue, add a listener to the beforeunload event of the (child)window as demonstrated in Confirm message on browser page close and prevent the action eventually.

If you call childWindow.close() , the window will get closed instead of hooking a callback function.