user experience design and consulting

Closing a help window when the main window closes

This demo shows how to close a help page when a web-based application's window is closed.

How to see the demo

Click here to open the help window: open help window. Then, close this window.


function opener() {
helpWindow ='apage.htm','windowname','width=300,height=200');

<body onUnload="if ((helpWindow) && !(helpWindow.closed)) helpWindow.close()">

How it works

This script uses the onUnload event to detect that the user is closing the window. It then checks to see if the help window is open and closes it if it's open. The script names the help window "helpWindow," so the onUnload event checks for this window by name. It will not close other open windows.

Browser compatibility

This script should work in any browser.


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